burnup (Noun) — A high-speed motorcycle race on a public road.
burnup (Noun) — The amount of fuel used up (as in a nuclear reactor).
burnup (Verb) — Burn brightly. ex. "Every star seemed to burn up with new intensity"
burnup (Verb) — Use up (energy). ex. "burn up calories through vigorous exercise"
burnup (Verb) — Burn completely; be consumed or destroyed by fire. ex. "The hut burned up"