harmine
A fluorescent harmala alkaloid belonging to the carboline family of compounds, found in harmal and certain other plants.

harmines
plural of harmine

harmonies
plural of harmony

harmony
Agreement or accord.
A pleasing combination of elements, or arrangement of sounds.
The academic study of chords.
Two or more notes played simultaneously to produce a chord.
The relationship between two distinct musical pitches (musical pitches being frequencies of vibration which produce audible sound) played simultaneously.
A literary work which brings together or arranges systematically parallel passages of historians respecting the same events, and shows their agreement or consistency.

harnass
Alternative spelling of harness.

harpings
The front part of the wales of a vessel, around the bow and fastened to the stem; used to provide protection from the seas.

hatchback
A car with a sloping, hinged rear door that opens upwards.
The door itself.

hatchbacks
plural of hatchback

hatchboat
A type of fishing boat found mostly in southern England in the 19th century, whose deck consisted of many movable hatches.

hatchboats
plural of hatchboat

hatcheck
A room, in a theatre or other such venue, in which hats and other garments may be stored.

hatchecks
plural of hatcheck

hatchek
Rare spelling of háček.

hatcheks
plural of hatchek

hatchway
A means of passing through a wall or floor, having a hatch (especially on a ship); a doorway with a hatch rather than a door.

hatchways
plural of hatchway

hatchwork
Crosshatching; ornamentation using a crosshatch pattern
The apparatus around the hatches of a vessel, particularly the cargo hatch

hatchworks
plural of hatchwork

hateship
A ship involving characters with an adversarial relationship.

hateships
plural of hateship

hatschek
Rare spelling of háček.

haulabout
A barge-like vessel with steel hull, large hatchways, and coal transporters, for coaling war vessels from its own hold or from other colliers.

haulabouts
plural of haulabout

haulback
A small wire rope or line used to pull the main cable (or butt-rigging) back into position after a log has been hauled out.
A method of surface mining where overburden (the material on top of the coal or ore) is transported from an area and then hauled back after removal of ore or coal.

haulbacks
plural of haulback

haulster
A kind of motorized cart for transporting goods.

haulsters
plural of haulster.

haunch
The area encompassing the upper thigh, hip and buttocks on one side of a human, primate, or quadruped animal, especially one that can sit on its hindquarters.
The loin and leg of a quadruped, especially when used as food.
A squat vertical support structure.
A jerked underhand throw.

havenerships
plural of havenership

hawkeries
plural of hawkery

hawkery
A place where hawks used for hunting are kept.
The practice of hunting using hawks.

hawsehole
The hole through which a ship's anchor rope is passed.
A hole in a ship through which a hawser is passed.

hawseholes
plural of hawsehole

hawser
A thick or heavy-duty cable or rope used to tow or moor a ship.

hawsers
plural of hawser

haycart
A cart for transporting hay.

haycarts
plural of haycart

hayricker
A horserake for making up hay into ricks.
A person employed to make up hay into ricks.

hayrickers
plural of hayricker

hayride
A recreational ride in a vehicle full of hay.

hayrides
plural of hayride

haywain
Obsolete spelling of hay wain (“haywagon”).

haywains
plural of haywain

hct
Abbreviation of hematocrit/haematocrit.

headblock
In a sawmill carriage, a cross-block on which the head of the log rests.
A piece of wood in a carriage (vehicle), connected with the spring and the perches, and joining the fore-gear and the hind-gear.

headblocks
plural of headblock

headboard
A vertical panel, either plain or upholstered, attached to the head of a bed.
A panel, usually of metal, attached to the head of a fore-and-aft sail for additional strength.
A board on the front of a train, carrying the train's name or that of the service it is on.
A grave marker made of wood.

headboards
plural of headboard

headcode
A code used to distinguish classes of train for the benefit of signalmen, formerly by using white oil lamps (or white discs) placed on brackets on the front of the locomotive. The various lamp positions defined the class of train.

headcodes
plural of headcode

headfast
A rope at the bows of a ship used to fasten it to a wharf, etc.

headfasts
plural of headfast

headlamp
An individual headlight, particularly of a motor vehicle.
A flashlight worn on the head.

headlamps
plural of headlamp

headliner
The headlining band or performer at a concert or similar event; the best-known and first billed musician, comedian, etc., often performing as the final act of the evening.

headliners
plural of headliner

headlinese
The jargon used in headlines of newspapers, often with unconventional grammar driven mainly by extreme brevity as a constraint of the medium.

headmanships
plural of headmanship

headmasterships
plural of headmastership

headmistressship
Alternative form of headmistress-ship.

headmistressships
plural of headmistressship

headrail
The supporting rail of a blind (such as a Venetian blind) that encloses its mechanism; a headbox.
A railing, on a sailing ship, behind the figurehead.
A person's tooth.

headrails
plural of headrail

headreach
Alternative form of head reach.

headsail
Any sail (of a sailing vessel) set forward of the foremost mast.

headsails
plural of headsail

headshape
The shape of the front face of a train or other vehicle.

headshapes
plural of headshape

headshell
A component of a record player that is attached to the end of a turntable arm. The cartridge is bolted to it.
A component of a Sun server, used to connect a console between two Sun machines. It is made up of a DB-25 male connector with a normal Cat-5 ethernet cable connecting to another DB-25 male connector.

headshells
plural of headshell

headships
plural of headship

headshunt
A short length of track, provided to release locomotives at terminal platforms, or to allow shunting to take place clear of main lines.

headshunts
plural of headshunt

headsman
A chief person; a head man
An executioner whose method of dispatching the condemned is decapitation.
A labourer in a colliery who transports the coal from the workings to the horseway, and who is oftentimes assisted by a younger worker called a foal.
One in command of a whaling vessel.

headsmen
plural of headsman

headstock
A headframe.
A part of a machine (such as a lathe or drill) that contains the primary spindle.
A beam that supports a bell.
A clamp that restrains a cow by the neck.
The part of a lute-type string instrument, such as a guitar, that holds the tuning pegs or tensioning screws of the strings.
A transverse structural member at the extreme end of a rail vehicle's underframe, also used on some bogies.

headstocks
plural of headstock

headway
A movement ahead or forward.
Forward motion, or its rate.
The interval of time or distance between the fronts of two vehicles (e.g. buses) moving in succession in the same direction, especially along the same pre-determined route.
Progress toward a goal.
The clearance beneath an object, such as an arch, ceiling or bridge; headroom.
A crossheading.

headways
plural of headway

headwind
A wind that blows directly against the course of a vehicle, like an aircraft, train, or ship.
A strong force that impedes or reverses progress.

headwinds
plural of headwind

headyard
Foreyard.

heartbeat
One pulsation of the heart; especially an irregular one, hence the emotion which causes it.
The rhythm at which a heart pulsates, a cardiac indicator.
A driving impulse or vital force; the vital center of something.
A very short space of time; an instant.
A periodic signal generated by hardware or software to indicate normal operation or to synchronize other parts of a system.

heartbeats
plural of heartbeat

heartcare
The care of the heart.