1. n. (military) acronym for "bad conduct discharge" as defined by the Uniform Code of Military Justice for US military servicemen, also known unofficially as the "Big Chicken Dinner" as
slang for the same discharge.
2. n. acronym for "buoyancy control device" used in
scuba diving, a vest that can be inflated or deflated while underwater to control a diver's depth.
1. "Corporal Smith bashed Lieutenant Jones in the fucking pie
hole right in
front of the general. Stupid shitbird is gonna get his BCD for sure."
2. "Shit, my god-damn BCD has a hole in it. If I dive with this POS on, I'll sink right to the bottom."