slang Someone who administers anesthesia (which comes in gaseous forms). Once the gas-passer is done, we'll go ahead in and start operating.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a jocular nickname for an anesthetist. (Hospitals.) My gosh! The gas-passer charged almost as much as the surgeon.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.