thrash
verbUK /θræʃ/
US /θræʃ/
To hit something again and again very hard.
The waves thrashed against the rocks during the storm.
OTHER MEANINGS
2. To move your arms and legs around wildly.
The fish thrashed on the deck of the boat.
3. To defeat someone very easily in a game or contest.
Our team thrashed the other side ten to nothing.
4. To separate the seeds from grain by beating it.
Farmers used to thrash wheat by hand.