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  • Air hammer

    a pneumatic hammer, usually portable., a hammer driven by compressed air
  • Air hole

    an opening to admit or discharge air., a natural opening in the frozen surface of a river or pond., air pocket.
  • Air jacket

    an envelope of enclosed air around part of a machine, as for checking the transmission of heat., british . life jacket.
  • Air line

    straight; direct; traveling a direct route, some railroads advertise air -line routes between stations .
  • Air liner

    a passenger aircraft operated by an airline.
  • Air lock

    civil engineering . an airtight chamber permitting passage to or from a space, as in a caisson, in which the air is kept under pressure., the impedance...
  • Air mail

    the system, esp. a government postal system, of sending mail by airplane., a letter, package, etc., sent by this system., a stamp authorizing delivery...
  • Air marshal

    an air force officer of a rank comparable to an army lieutenant general.
  • Air pocket

    (not in technical use) a nearly vertical air current that can cause an aircraft to experience a sudden change in altitude, usually a decrease.
  • Air port

    a tract of land or water with facilities for the landing, takeoff, shelter, supply, and repair of aircraft, esp. one used for receiving or discharging...
  • Air power

    the total military capability of a nation for operations involving the use of aircraft and missiles., noun, aviation , aviation strength
  • Air pump

    an apparatus for drawing in, compressing, or exhausting air., ( initial capital letters ) astronomy . the constellation antlia., noun, bicycle pump , vacuum...
  • Air raid

    a raid by aircraft, esp. for bombing a particular area., noun, air assault , air attack , air campaign , air strike , bombing mission , bombing raid ,...
  • Air rifle

    an air gun with rifled bore.
  • Air shaft

    air well., mining . a ventilating shaft., noun, air duct , air hole , air pipe , air tube , air well
  • Air speed

    the forward speed of an aircraft relative to the air through which it moves.
  • Air station

    an airfield having facilities for sheltering and servicing aircraft.
  • Air strip

    a small landing field having only one runway., a temporary or auxiliary aircraft runway.
  • Air tight

    preventing the entrance or escape of air or gas., having no weak points or openings of which an opponent may take advantage, an airtight contract .
  • Aircraft

    any machine supported for flight in the air by buoyancy or by the dynamic action of air on its surfaces, esp. powered airplanes, gliders, and helicopters.,...
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