Wiktionary
vb. 1 (context intransitive English) To dissipate as the result of heat. 2 (context transitive English) To cause to dissipate by applying heat. 3 (context transitive intransitive oil English) To dispose of unusable explosive natural gas from an oil well by burning it as it emerges from the well. 4 (context transitive intransitive television English) To fill low value air time with programming not suitable for its original purpose.
WordNet
Usage examples of "burn off".
We're coming home one night from where Tommy and me have been to this bloke's farm to help him burn off and I'm pretty hot and tired from having the heat in my face all afternoon.
The first long trip was up the bay to Devon Island, where Janney had come to help burn off more acreage for tobacco, and what Turlock saw there was a revelation: a decent house, a wife who kept it neat and who educated her sons, a Papist chapel of their own, and other appurtenances which bespoke wealth.
Washing the car would burn off some energy, she thought, and quickly changed into shorts and a T-shirt.
The powder inside is used by Fray Antonio to burn off skin growths.
He was given to understand he was not welcome to leave his room, so he began pacing, pacing and pivoting when he reached the far wall, and then, because he was in many ways still just a boy, running back and forth to burn off the prodigious amounts of food he ate.