Dictionary.com
definitions
  • synonyms

buoyancy compensator

noun Scuba Diving.
  1. an inflatable vest used to control one's buoyancy underwater or to rest at the surface, usually having a connecting hose for inflation or deflation by mouth and a CO2 cartridge for rapid, emergency inflation.
Show More
Also called BC, buoyancy control device.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018