dropper
A utensil for dispensing a single drop of liquid at a time.
One who drops something, especially one who drops a specific item to cause mischief.
A software component designed to install malware on a target system.
A fly that drops from the leaden above the bob or end fly.
A branch vein which drops off from, or leaves, the main lode.
The young bulb of a tulip, not of flowering size.
A dog which suddenly drops upon the ground when it sights game.
A batten fixed to a post-and-wire fence to keep the wires apart.
A person who uses fraudulent cheques.
A drop shot.
A delivery by lob bowling (no longer legal).
A bowler who makes such deliveries.
A seat post whose height can be adjusted while riding.

droppers
plural of dropper

dropwall
A prefabricated wall that is supported by a framework.
A short wall used as a weir or floodgate to control the flow of water.
A temporary barrier used to surround troops or protect battlements, often with spikes on the outside to prevent the enemy from scaling it.

dropwalls
plural of dropwall

drosometer
A device for measuring the amount of dew on a surface.

drosometers
plural of drosometer

drott
An earthmoving machine similar to a bulldozer, but with a front bucket that can be used for scooping and lifting soil, rather than merely pushing it.

drotts
plural of drott

drunkometer
A breathalyzer.

drunkometers
plural of drunkometer

drybag
A bag used to keep things dry when in a wet or damp environment

drybags
plural of drybag

dubbin
A mixture of tallow and oil used to soften leather, and make it waterproof.

dubbins
plural of dubbin

duckboard
One of a long series of boards laid from side to side as a path across wet or muddy ground; normally used in plural.
Wooden, low walkway or short part of a path with one or more planks, logs, or boards laid after each other lengthwise, often two planks wide.
A panel of wooden slats typically laid on a concrete floor in a workshop, to reduce fatigue for a person operating a machine tool or working at a bench.

duckboards
plural of duckboard

duckhead
Part of a tyre-changing device, designed to fit around the rim of the wheel so as to mount and demount the tyre.

duckheads
plural of duckhead

ductilimeter
An instrument for determining the ductility of metals.

ductilimeters
plural of ductilimeter

ductoscope
A device used in ductoscopy

ductoscopes
plural of ductoscope

dud
A device or machine that is useless because it does not work properly or has failed to work, such as a bomb, or explosive projectile.
A failure of any kind.
A failure of any kind.
A failure of any kind.
Clothes, now always used in plural form duds.

duddest
superlative form of dud: most dud

duds
plural of dud

dugesiid
Any of the freshwater planarians in the family Dugesiidae, including the species used for studying regeneration in the laboratory.

dugesiids
plural of dugesiid

dugout
A canoe made from a hollowed-out log.
A pit dug into the ground as a shelter, especially from enemy fire.
A sunken shelter at the side of a sports field where non-playing team members and staff sit during a game.
A small portable case for equipment used to smoke marijuana.
A pit used to catch and store rainwater or runoff.

dugouts
plural of dugout

duhunga
A hall used for ceremonies in central Sulawesi

dulanermin
A recombinant protein used to treat some cancers

dungfork
A fork for tossing dung.

dunnies
plural of dunny

dunny
Somewhat dun, dusky brownish.

dunnycan
Alternative form of dunny can.

dunnycans
plural of dunnycan

dunnyman
Alternative form of dunny man.

dunnymen
plural of dunnyman

duodecad
Alternative form of dodecad.

duodecads
plural of duodecad

duotang
A type of folder with three prongs that is commonly used to store papers in elementary school settings.

duotangs
plural of duotang

duplexer
A device that enables communication in two directions over a single path.
A accessory of some printers that automatically flips pages to print on both sides.

duplexers
plural of duplexer

duplicator
A device that reproduces something, such as printed documents or compact discs; a copier.

duplicators
plural of duplicator

durag
Alternative spelling of do-rag.

durags
plural of durag, alternative spelling of do-rags.

durometer
An instrument used to measure the hardness or stiffness of a material, especially of an elastomer, such as rubber. A simple durometer consists of a movable tip on a spring with a dial gauge.
The measurement of the hardness or stiffness of a material, especially of plastic or rubber.

durometers
plural of durometer

dustbug
A dust control device for use with a record player that sweeps dust from in front of the needle onto an absorbent pad.

dustbugs
plural of dustbug

dustcloth
A cloth used for dusting; a duster.

dustcloths
plural of dustcloth

dustpersons
plural of dustperson

dustrag
A dustcloth

dustrags
plural of dustrag

dut
A snug woolly hat.

duts
plural of dut

duttee
Alternative form of dhoti.

duttees
plural of duttee

dutties
plural of dutty

dutty
The ground.

duvelisib
A novel inhibitor of PI3K delta and gamma, used to treat hematologic malignancies and inflammatory conditions.

dwimmery
A computer program's ability to sense the user's intentions rather than work according to a well-defined specification.

dyebath
The liquid used for dyeing something by submerging it.

dyebaths
plural of dyebath

dyestuff
Any soluble pigment used for dyeing the hair, fabric, etc.

dyestuffs
plural of dyestuff

dymaxion
Able to use technology to maximize the use of resources.

dynabeads
superparamagnetic spherical polymer particles used for the adsorption or coupling of various bioreactive molecules or cells

dynactinometer
An instrument for measuring the intensity of photogenic rays and computing the power of object glasses.

dynactinometers
plural of dynactinometer

dynameter
An instrument used to measure the magnification of a telescope.

dynameters
plural of dynameter

dynamo
An electricity generator; a dynamo-electric machine.
The mechanism by which a celestial body, such as the Earth or a star, generates a magnetic field.
An energetic person.

dynamograph
A dynamometer that produces a graphical record; especially one used to record muscular power

dynamographs
plural of dynamograph

dynamos
plural of dynamo

dynamotor
A device for converting electrical power to another form.

dynamotors
plural of dynamotor

eaglestone
A concretionary nodule of iron oxide with a loose kernel inside such that it makes a rattling noise, formerly used for magical or medicinal purposes.

eaglestones
plural of eaglestone

earbug
Any of various agricultural pests of genus Leptocorisa that attack grain crops.
A small, close-range receiver that fits in a person's ear, allowing them to hear transmissions, usually by an observer or advisor.
Any of various fictional devices that a person can listen to when it is installed in their ear.

earbugs
plural of earbug

earcon
A brief, distinctive sound used to represent a specific item or event.

earcons
plural of earcon

eardropper
A dropper for administering ear drops.

eardroppers
plural of eardropper

earings
plural of earing

earloop
A loop that fits around the ear to hold an earphone or similar device in place

earloops
plural of earloop

earmold
An anatomically-shaped device worn in the ear for sound conduction or ear protection.

earmolds
plural of earmold

earmould
Alternative spelling of earmold.

earmoulds
plural of earmould

earmuff
A garment to keep the ears warm.
A garment or part worn over a single ear.
A sound-deadening cup or a pair of such cups worn over the ear or ears.
Attributive form of earmuffs.

earmuffs
A headphone-like device designed to cover a person's ears for protection against cold or noise. They consist of a thermoplastic or metal head-band, that fits over the top of the head, and a pad at each end, to cover the external ears.

earpick
An instrument for removing earwax from the ear.

earpicks
plural of earpick