Also found in: Medical.
euphemism A break to urinate or defecate; a bathroom break. I need a bio break, so I'll be right back.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a toilet break. (Contrived and euphemistic.) She out of pocket for a bio break.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.