The cavity in a cavity wall containing air for insulation.
that part of the sky designated for the sole use of aircraft.
The portion of an enclosed area which contains air, especially breathable air.
Space (i.e. a few neighboring frequencies) available for broadcasting within a particular frequency band.
A specified portion of the atmosphere, especially that under the technical aviation control and/or jurisdiction of a particular state over which territory (and territorial waters) it lies.
The vertical length of a hanging curtain.
A dropped pass.
The distance that a person drops when being executed by hanging.
A small quantity of liquid, just large enough to hold its own round shape through surface tension, especially one that falls from a source of liquid.
Only used in get the drop on, have the drop on An advantage.
The distance below a cliff or other high position through which someone or something could fall; hence, a steep slope.
A very small quantity of liquid, or (by extension) of anything.
The amount of money that a gambler exchanges for chips in a casino.
Usually preceded by the: alcoholic spirits in general.
A trapdoor (“hinged platform”) on a gallows; a gallows itself.
A point in a song, usually electronic music such as dubstep, house, trace, or trap, where there is a very noticeable and pleasing change in bass, tempo, and/or overall tone; a climax, a highlight.
An ornament resembling a pendant; a gutta.
The cover mounted on a swivel over a keyhole that rests over the keyhole when not in use to keep out debris, but is swiveled out of the way before inserting the key.
A fruit which has fallen off a tree, etc., or has been knocked off accidentally, rather than picked.
Of women's clothes: the difference between the bust circumference and hip circumference.
A mechanism for lowering something, such as a machine for lowering heavy weights on to a ship's deck, or a device for temporarily lowering a gas jet, etc.
A place where items or supplies may be left for others to collect, whether openly (as with a mail drop), or secretly or illegally (as in crime or espionage); a drop-off point.
The distance of the axis of a shaft below the base of a hanger.
An instance of making a delivery of people, supplies, or things, especially by parachute out of an aircraft (an airdrop), but also by truck, etc.
A dose of liquid medicine in the form of a drop (sense 1).
A decline in degree, quality, quantity, or rate.
A single measure of whisky.
A curtain which falls in front of a theatrical stage; also, a section of (cloth) scenery lowered on to the stage like a curtain.
An item made available for the player to pick up from the remains of a defeated enemy.
A release (of music, a video game, etc).
Often preceded by a defining word: a small, round piece of hard candy, such as a lemon drop; a lozenge.
Of men's clothes: the difference between the chest circumference and waist circumference.
Usually preceded by the: relegation from one division to a lower one.
A liquid medicine that is intended to be administered in drops (sense 1).
A small amount of an alcoholic beverage.
An act of moving downwards under the force of gravity; a descent, a fall.
The depth of a (square) sail (generally applied to the courses only); the vertical dimension of a sail.
Preceded by the: execution by hanging.
To dispose or get rid of (something); to lose, to remove.
To let (something) fall; to allow (something) to fall (either by releasing hold of, or losing one's grip on).
To reduce; to make smaller.
To come to an end (by not being kept up); to lapse, to stop.
To fall behind or to the rear of a group of people, etc., as a result of not keeping up with those at the front.
To make (someone or something) fall to the ground from a blow, gunshot, etc.; to bring down, to shoot down.
To pass or use (counterfeit cheques, money, etc.).
To quickly lower or take down (one's trousers), especially in public.
Of the testicles: to hang further away from the body and begin producing sperm due to puberty.
To cook (food, especially fast food), particularly by lowering into hot oil to deep-fry, or by grilling.
Of an animal (usually a sheep): to give birth to (young); of a bird: to lay (an egg).
To impart (something).
To cease concerning oneself over (someone or something); to have nothing more to do with (a discussion, subject, etc.).
To perform (rap music).
Usually followed by by, in, or into: of a person: to visit someone or somewhere informally or without a prior appointment.
Of a programme, software, a music album or song, etc.: to enter public distribution.
To play (a portion of music) in the manner of a disc jockey.
Of a liquid: to fall in drops or droplets.
To drop out of the betting.
To collapse in exhaustion or injury; also, to fall dead, or to fall in death.
To fall or sink quickly or suddenly to the ground.
Of a voice: to lower in timbre, often due to puberty.
To fall (straight down) under the influence of gravity, like a drop of liquid.
Of a song or sound: to lower in key, pitch, tempo, or other quality.
To move to a lower position; to allow to hang downwards; to lower.
To let (a letter, etc.) fall into a postbox; hence, to send (a letter, email, or other message) in an offhand manner.
To drip (a liquid) in drops or small amounts.
To set down (someone or something) from a vehicle; to stop and deliver or deposit (someone or something); to drop off.
To cease to include (something), as if on a list; to dismiss, to eject, to expel.
To (unexpectedly) lose (a competition, game, etc.).
To fail to write, or (especially) to pronounce (a syllable, letter, etc.).
To lower (a sound, a voice, etc.) in pitch or volume.
To fall into a particular condition or state.
To tune (a guitar string, etc.) to a lower note.
To present the user with a more basic interface.
To release (a programme, software, a music album or song, etc.) to the public.
To lose, spend, or otherwise part with (money).
To score (a goal) by means of a drop kick.
To mention (something) casually or incidentally, usually in conversation.
To enter a more basic interface.
To decrease, diminish, or lessen in condition, degree, value, etc.
Especially in drop acid: to swallow (a drug, particularly LSD).
Of a fielder: to fail to dismiss (a batsman) by accidentally dropping a batted ball that had initially been caught.
To cancel or cease to participate in (a scheduled course, event, or project).