thrash

Meanings

1. To beat mercilessly.
2. To defeat utterly.
3. To thresh.
4. To move about wildly or violently; to flail; to labour.
5. To extensively test a software system, giving a program various inputs and observing the behavior and outputs that result.
6. In computer architecture, to cause or undergo poor performance of a virtual memory (or paging) system.

1. A beat or blow; the sound of beating.
2. The roar and smoke of a particularly powerful diesel engine.
3. Ellipsis of thrash metal.

1. A surname.

Etymology

From Middle English thrasshen, a dialectal variant of thresshen, threshen (whence the modern English thresh), from Old English þrescan, from Proto-Germanic *þreskaną, whence also Old High German dreskan, Old Norse þreskja.