Meaning of the word pontoons in English

What does pontoons mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

pontoons

US /pɑːnˈtuːnz/
UK /pɒnˈtuːnz/

Plural Noun

flat-bottomed boats or floats used to support a bridge, dock, or other structure on water

Example:
The temporary bridge was supported by a series of pontoons.
Seaplanes often use pontoons for landing and taking off from water.