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noun
- (medicine) A medicine or other agent to assist hearing.
adjective
- Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory.
- (music) Naturally producing or produced by an instrument without electrical amplification, as an acoustic guitar or acoustic piano.
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| addition |
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noun
- (uncountable) The act of adding anything.
- The addition of five more items to the agenda will make the meeting unbearably long.
- Anything that is added.
- (arithmetic) (uncountable) The process of adding.
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| adz |
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noun
- alternate spelling of adze
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| A-frame |
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noun
- an architectural structure, in the shape of an "A", having two straight sides meeting at the top.
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| aggregate |
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noun
- A mass, assemblage, or sum of particulars; something consisting of elements but considered as a whole.
- A mass formed by the union of homogeneous particles; " in distinction from a compound, formed by the union of heterogeneous particles.
- The full chromatic or the set of all twelve pitch classes, usually presented by two or more voices near-simultaneity, simultaneously in hexachords. (DeLone? et. al. (Eds.), 1975, chap. 6) (rfc, music definition needs rewritten because the current one is copyrighted)
- Solid particles of low aspect ratio added to a composite material, as distinguished from the matrix and any fibers or reinforcements, especially the gravel and sand added to concrete. (technical)
verb (aggregat, ing)
- (transitive) To bring together; to collect into a mass or sum. The aggregated soil.
- (transitive) To add or unite, as, a person, to an association.
- (transitive) To amount in the aggregate to; as, ten loads, aggregating five hundred bushels.
adjective
- Formed by a collection of particulars into a whole mass or sum; collective; combined; added up
- consisting or formed of smaller objects or parts.
- Formed into clusters or groups of lobules; as, aggregate glands.
- Composed of several florets within a common involucre, as in the daisy; or of several carpels formed from one flower, as in the raspberry.
- Having the several component parts adherent to each other only to such a degree as to be separable by mechanical means.
- United into a common organized mass; said of certain compound animals.
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| air duct |
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noun
- A duct, through which air is forced or extracted, that forms part of a building's air conditioning and ventilation system.
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| air shaft |
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noun
- a vertical (or near vertical) shaft that supplies ventilation to a tunnel or other underground facility
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| Allen screw |
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noun
- A screw whose head has a hexagonal socket.
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| Allen wrench |
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noun
- A hex head wrench.
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| alligator |
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noun
- a large amphibious reptile with sharp teeth and very strong jaws related to the crocodile and native to the Americas and China. Informal short form: gator
- All you could see of the were its two eyes above the water, and suddenly it snatched up and caught the poor bird with its strong jaws full of sharp teeth.
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| apron |
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noun
- An article of clothing worn over the front of the torso and/or legs for protection from spills.
- The paved area of an airport.
- The sides of a trees canopy
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| auger |
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noun
- A carpenter's tool for boring holes larger than those bored by a gimlet.
- A snake or plumber's snake (plumbing tool)
- A tool used to bore holes in the ground, e.g. for fence posts
- A hollow drill used to take core samples of soil, ice, etc for scientific study.
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| awl |
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noun
- A pointed instrument for piercing small holes, as in leather or wood; used by shoemakers, saddlers, cabinetmakers, etc. The blade is differently shaped and pointed for different uses, as in the brad awl, saddler's awl, shoemaker's awl, etc.
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| ax |
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noun
- (alternative spelling of, axe
- Etymology 1, axe)
=
verb (ax, es)
- (alternative spelling of, axe
- Etymology 1, axe)
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| axe |
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noun
- A tool for felling trees or chopping wood etc. consisting of a heavy head flattened to a blade on one side, and a handle attached to it.
- An ancient weapon consisting of a head that has one or two blades and a long handle.
- (colloquial) A dismissal or rejection.
- His girlfriend/boss/schoolmaster gave him the .
verb (ax, ing)
- (transitive) To fell or chop with an axe.
- (transitive) To terminate or reduce tremendously in a rough or ruthless manner.
- The government announced its plans to public spending.
- The broadcaster axed the series because far less people than expected watched it.
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