1. (verb) become inflated

• billow
• inflate

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

• lighter-than-air craft

2. (noun) small thin inflatable rubber bag with narrow neck

• plaything
• toy

3. (verb) ride in a hot-air balloon

• aviate
• fly
• pilot

4. (verb) become inflated

• expand

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

• hot-air balloon
• meteorological balloon
• trial balloon

2. (verb) become inflated

• reflate

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

• balloonist

2. (verb) ride in a hot-air balloon

• balloonist

3. (verb) become inflated

• inflation