hanja
The Han character script used to write Korean, particularly in classical literature.
Any individual Han character as used in the Korean language.

haploscope
An optical device that presents a separate image to each eye

haploscopes
plural of haploscope

hapmap
A map of haplotypes that is used to display common patterns of human genetic variation that are involved in human health and disease

hapmaps
plural of hapmap

haptometer
An instrument for measuring sensitivity to touch, by adding and removing weights that produce pressure.

haptometers
plural of haptometer

harateen
A plain weave woolen material with coarser weft than warp yarns, watered and stamped and pressed together with a hot press, produced in England in the 18th and early 19th century and used for upholstery.

harateens
plural of harateen

harddisk
Alternative form of hard disk.

harddisks
plural of harddisk

hardpoint
Part of an airframe designed to carry an external load such as a missile.
A metal screw thread embedded in a workbench to facilitate the mounting and removal of specific tools.
A structure for holding someone suspended with rope.

hardpoints
plural of hardpoint

hardstone
Precious stone or semi-precious stone used to make intaglio, mosaics etc.

hardstones
plural of hardstone

harehound
One of a small breed of dogs used for hunting hares.

harehounds
plural of harehound

harmonograph
A mechanical device that uses a combination of pendulums to generate an image based on Lissajous curves.

harmonographs
plural of harmonograph

harmonometer
An instrument for measuring the harmonic relations of sounds.

harmonometers
plural of harmonometer

harnessings
plural of harnessing

harnessmaker
A maker of harnesses and similar equipment for horses.

harnessmakers
plural of harnessmaker

harnessry
harness equipment for animals

harrateen
Alternative form of harateen.

harrateens
plural of harrateen

hashkey
The key used to locate a value in a hash table or equivalent data structure.

hashkeys
plural of hashkey

hashpipe
Alternative form of hash pipe.

hashpipes
plural of hashpipe

hashtable
Alternative spelling of hash table.

hashtables
plural of hashtable

hashtag
A metadata tag, signaled by a preceding hash sign (#), used to label content.
The hash sign itself, especially when used as part of a hashtag.

hashtags
plural of hashtag

hataki
A tool used for cleaning surfaces of dust, made of cloth strips attached to a pole.

hatakis
plural of hataki

hatchel
A comb used to separate flax fibers.

hatchels
plural of hatchel

hatguard
A string or cord used to keep a hat on the wearer's head.

hatguards
plural of hatguard

hatpin
A long straight pin, often with a decorative head, used to secure a woman's hat to her hair.

hatpins
plural of hatpin

hatstand
A device used to store hats upon, consisting of a vertical pole with a sturdy base to prevent toppling, and an array of pegs to hold the hats.

hatstands
plural of hatstand

hatzotzrah
An instrument similar to a trumpet used by the ancient Israelites.

haulageway
A track or road used for hauling materials.

haulageways
plural of haulageway

haulyard
Alternative spelling of halyard.

haulyards
plural of haulyard

hawkey
Alternative form of hawkie (“white-faced cow”).

hawkeys
plural of hawkey

hay
Grass cut and dried for use as animal fodder.
Any mix of green leafy plants used for fodder.
Cannabis; marijuana.
A net set around the haunt of an animal, especially a rabbit.

haybag
Alternative form of hay bag (“bag filled with hay”).
Alternative form of hay bag (“a woman”).

haybags
plural of haybag

haybed
Alternative spelling of hay bed.

haybeds
plural of haybed

hayfever
Alternative spelling of hay fever.

hayfork
A tool used for moving hay; a pitchfork.

hayforks
plural of hayfork

hayhead
A type of harvester head used to reap hay.

hayheads
plural of hayhead

hayloft
The upper storey of a barn used for storing hay.

haylofts
plural of hayloft

haynet
A bag made of netting, used to hold hay for feeding horses.

haynets
plural of haynet

hays
plural of hay

hayshed
A shed or barn used to store hay.

haysheds
plural of hayshed

haywagon
Alternative spelling of hay wagon.

haywagons
plural of haywagon

haywire
Wire used to bind bales of hay.

haywires
plural of haywire

hd
Abbreviation of head.

hdrs
plural of hdr

headbolt
A bolt that is used to secure the head of something (such as the cylinder head of an internal combustion engine).

headbolts
plural of headbolt

headbox
Synonym of headrail.
A device for distributing a suspension of solids in water to a machine at a constant rate, or for retarding the rate of flow, as to a top-feed filter, or for eliminating by overflow some of the finest particles.
The topmost square of a USPSA target holding the B and A scoring zones.

headboxes
plural of headbox

headform
A model in the shape of a human head used for safety testing.

headground
A background used for a headshot.

headgrounds
plural of headground

headings
plural of heading

headmount
A virtual reality device worn on the head and providing visual input; a VR headset.

headmounts
plural of headmount

headpin
The kingpin.
A straight metal wire with a flat end, used for beads in jewelry making.

headpins
plural of headpin

headscratcher
Alternative form of head-scratcher.

headscratchers
plural of headscratcher

headset
A pair of headphones or earphones, or a singular headphone or earphone, typically with an attached microphone.
Any electronic device worn on the head.
On a bicycle, the system of bearings that connects the fork to the frame.
A mindset.

headsets
plural of headset

headstage
A piece of equipment, tethered to the head of a laboratory animal, that allows multiple channels of brain activity to be monitored and recorded

headstages
plural of headstage

headstick
A stick-like device strapped to a paralysed person's head to allow them to perform activities such as typing on a keyboard.
A straight piece of furniture placed at the head of a form, between the chase and the type.
A spar attached to the head of the topsail.

headsticks
plural of headstick

headwheel
A rotating component in a videotape system, bearing the magnetic heads used to record and reproduce signals.

headwheels
plural of headwheel

headworks
Any structure at the head or diversion point of a waterway. It is smaller than a barrage and is used to divert water from a river into a canal or from a large canal into a smaller canal.

heartaches
plural of heartache

heater
A device that produces and radiates heat, typically to raise the temperature of a room or building.
A person who heats something, for example in metalworking.
A gun.
A fastball, especially one thrown at high velocity.
An extended winning streak.
A medieval European shield having a rounded triangle shape like a clothes iron.
A dead heat; a race in which two or more competitors reach the finish line simultaneously.
Synonym of banger (“a powerfully energetic or exceptional song”).

heaters
plural of heater

heatpipe
A pipe used for transmitting heat

heatpipes
plural of heatpipe

heatspreader
Alternative form of heat spreader.

heatspreaders
plural of heatspreader

heckle
To question harshly in an attempt to find or reveal weaknesses.
To insult, tease, make fun of or badger, especially during a comedy performance.
To prepare (flax) for spinning, using special combs called hackles.

heckles
third-person singular simple present indicative of heckle

hedgebill
A hedger's tool resembling a sickle.

hedgebills
plural of hedgebill

hedonimeter
Alternative form of hedonometer.

hedonimeters
plural of hedonimeter

hedonometer
An imaginary device used to gauge happiness or pleasure.

hedonometers
plural of hedonometer

heelball
A mixture of wax and lampblack used to polish shoes, and in brass rubbing.

heelballs
plural of heelball