v.1. To destroy something or someone by fire or heat: She burned the contract up. He burned up all the photographs.
2. To be completely destroyed by fire or heat: The cabin burned up, leaving only ashes.
3. To expend something; use something up: When I was on vacation, I burned up all my money quickly. I'm really burning up calories with this exercise plan.
4. To make someone angry: Their rudeness really burns me up.
5. To travel over or through something at high speed: The racecars were really burning up the track.