thresh
thresh
/θreʃ/
1 transitive thresh something to separate grains of rice, wheat, etc. from the rest of the plant using a machine or, especially in the past, by hitting it with a special tool 2 intransitive, transitive thresh (something) to move or make something move in a way that is violent or shows a loss of control Word Origin
Old English therscan, later threscan, of Germanic origin; related to Dutch dorsen and German dreschen. Compare with thrash.