The Collaborative International Dictionary of English v.0.48:
Balloon \Bal*loon"\, n. [F. ballon, aug. of balle ball: cf. It.
ballone. See 1st Ball, n., and cf. Pallone.]
1. A bag made of silk or other light material, and filled
with hydrogen gas or heated air, so as to rise and float
in the atmosphere; especially, one with a car attached for
2. (Arch.) A ball or globe on the top of a pillar, church,
etc., as at St. Paul's, in London. [R.]
3. (Chem.) A round vessel, usually with a short neck, to hold
or receive whatever is distilled; a glass vessel of a
4. (Pyrotechnics) A bomb or shell. [Obs.]
5. A game played with a large inflated ball. [Obs.]
6. (Engraving) The outline inclosing words represented as
coming from the mouth of a pictured figure.
Air balloon, a balloon for a["e]rial navigation.
Balloon frame (Carp.), a house frame constructed altogether
of small timber.
Balloon net, a variety of woven lace in which the weft
threads are twisted in a peculiar manner around the warp.