noun. A small headphone that fits inside the ear against the outer opening of the ear canal.

noun. A small earphone designed for use with a portable sound system; an ear bud.

"I guessed a stomach with an adjustable gastric band on it see? the earbud is the filling port! complete with upper and lower intestine."

bud up  

110-block  5-50  Walkman  andwhether  caulk