Also found in: Acronyms.
1. An old horse, particularly one that is a poor racehorse. Bring that hay burner back to the stables—it's not even worth racing him.
2. slang Someone who smokes marijuana. I used to be a real hay burner in high school, but I stay away from pot these days.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
1. n. a worthless racehorse; any old and worn-out horse. I went to a dude ranch, and they gave me an old hay burner to ride.
2. and hay head n. a marijuana smoker. (Drugs.) Some hay head was around trying to sell raffle tickets that looked handmade.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.