thrash

transitive verb

1. thresh
2. to make move violently or wildly; beat: a bird thrashing its wings
3. to give a severe beating to; flog
4. to defeat overwhelmingly

intransitive verb

1. thresh
2. to move or toss about violently, flinging the arms, legs, etc. about wildly or vigorously: thrashing in agony
3. to make one's way by thrashing

noun

1. the act of thrashing
2. a style of heavy metal rock that is played very fast with minimal melodic and harmonic components, rapidly shouted lyrics about death, destruction, insanity, etc., and both musicians and audience thrashing about, as in slam dancing or moshing