(noun, verb)


1. large tough nonrigid bag filled with gas or heated air

Definition categories: man–made

2. small thin inflatable rubber bag with narrow neck

Definition categories: man–made, plaything, toy

Sentences with balloon as a noun:

- the balloon of St. Paul's Cathedral in London


1. ride in a hot-air balloon

- He tried to balloon around the earth but storms forced him to land in China

Definition categories: motion, aviate, fly, pilot

2. become inflated

- The sails ballooned

Similar word(s): billow, inflate

Definition categories: change, expand

Sentences with balloon as a verb:

- His stomach ballooned from eating such a large meal.

- Prices will balloon if we don't act quickly.