noun Scuba Diving.
a belt worn to control a diver's buoyancy under water, on which slotted lead weights can be slipped according to the diver's body size and weight and having a quick-release buckle for emergency discarding.
Origin of weight belt
First recorded in 1950–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019