¦ verb
1. beat repeatedly and violently with or as with a stick or whip.
2. move in a violent or uncontrolled way: he lay thrashing around in pain.
3. informal defeat heavily.
4. (thrash something out) discuss something frankly and thoroughly, especially to reach a decision.
¦ noun
1. a violent or noisy movement of beating or thrashing.
informal a fast and exciting motor race or other sporting event.
2. Brit. informal a party, especially a loud or lavish one.
3. (also thrash metal) a style of fast, loud, harsh-sounding rock music, combining elements of punk and heavy metal.
Origin