14 DICTIONARY OF AVIATION
internal airzbag, an air-bag placed inside of the main gasbag or envelop of a balloon or airship to preserv the form of the gasbag or the tautness of the envelop, or to regulate ascent and descent; a ballonet.
2. a bag containing air for breathing-purposes, some- times taken along in a balloon for use in emergencies.
3. a sferical or cylindrical bag inflated with air, used to convey signals from balloons.
4. a bag inflated with air taken along in a flying-machine for use as a float for the machine or as a life-preserver for the aviator, in case of falling into water.
air-ball 'e:z,bc:l n. a toy rubber ball inflated with air. air-balloon 'e:z-b9,loun n. [also spelt air balloon']
1. (in fireworks) same as balloon (sense i).
2. a balloon inflated with hydrogen or some .light gas other than heated air; an inflammable-air balloon: distin- guish! from firetballoon (sense i) and hot-air balloon, under balloon (sense 2).
3. a balloon or bag-like receptacle, as at the lower part of the gas-bag of a Clement-Bayard dirigible balloon, de- signed to contain air for regulating the craft.
air-ballonet 'e^-bsete^net n. [also spelt airtballonette and, less properly, airtballonnet, airtballoonet] a ballonet fild with air.
air-balloonist 'e:z-b3,}ou-nist n. one skild in making ascents in, or managing air-balloons; a balloonist; an aero- naut.
air-beaten 'e:z,bii-tn adj. wether-beaten from long ex- posure to the air.
air-billow 'e:z,bilo n. a billow of air; a long gentle air* wave.
air-bird 'e:z,bB:zd n. a bird which habitually lives in the air: distinquisht from land-bird and water-bird.
air-bladder 'e^bbedaz n. a bladder or sac fild with air, as in an insect or plant; an air-float; also, the siuimming- bladder of a fish.
air-blower 'e:z,bloo-9z n. a machine for blowing air; a blower.
air-boat 'e:z,boot n. [also spelt airboat] a boat or vessel for sailing in or navigating the air; an airship; a sky-boat.
air-bomb 'e:z,bem n. [also spelt air bomb, air-bom] a bem designed for use in the air, or adapted for being thrown from an airship.
air-bone 'ei^boon n. a hellow bone containing air, as in birds.
air-borne 'e^botzn adj. borne or carried on or in the air.
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