a bag made of thin rubber or other light material, usually brightly colored, inflated with air or with some lighter-than-air gas and used as a children's plaything or as a decoration.
a bag made of a light material, as silk or plastic, filled with heated air or a gas lighter than air, designed to rise and float in the atmosphere and often having a car or gondola attached below for carrying passengers or scientific instruments.
(in drawings, cartoons, etc.) a balloon-shaped outline enclosing words represented as issuing from the mouth of the speaker.
an ornamental ball at the top of a pillar, pier, or the like.
a large, globular wineglass.
a round-bottomed flask.
to go up or ride in a balloon.
to swell or puff out like a balloon.
to multiply or increase at a rapid rate: Membership has ballooned beyond all expectations.
to fill with air; inflate or distend (something) like a balloon.
puffed out like a balloon: balloon sleeves.
(of a loan, mortgage, or the like) having a payment at the end of the term that is much bigger than previous ones.