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Meaning of pony bottle | Babel Free

Noun CEFR B2

Definitions

A small diving cylinder fitted with an independent regulator, used as a backup in case of emergency.

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

pony boy pony car pony engine Pony Express pony fan pony fucker