To relinquish ownership of an item by trading it to another person. A noun or pronoun can be used between "barter" and "off." I didn't need that old piece of junk, so I bartered it off. I can't believe you bartered off your car in exchange for a few old records.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
barter something off
to get rid of something by trading it for something else. See if you can barter that old desk off. She bartered off the used bookshelf.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.