6. (Engraving) The outline inclosing words represented as coming from the mouth of a pictured figure.
Air balloon, a balloon for aërial 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.
Bal*loon", v. t. To take up in, or as if in, a balloon.
Bal*loon", v. i. 1. To go up or voyage in a balloon.