Meaning: to move violently and uncontrollably:
* The hurricane thrashed the coastline, leaving behind a trail of destruction.
* The fish thrashed wildly on the deck of the boat before it was released back into the water.
* The dog thrashed around in its sleep, chasing imaginary squirrels.
Meaning: to beat or hit repeatedly:
* The prisoners thrashed their cell doors in a desperate attempt to escape.
* The angry mob thrashed the shop windows with sticks and stones.
* The band thrashed out a heavy metal song with intense energy.
Meaning: to criticize harshly:
* The movie critic thrashed the latest blockbuster, calling it "a complete waste of time."
* The teacher thrashed the student for not completing their homework.
* The editor thrashed the article, demanding numerous revisions.
Let me know if you'd like to see more examples or have a specific context in mind!