,| 1. | to beat soundly in punishment; flog. |
| 2. | to defeat thoroughly: The home team thrashed the visitors. |
| 3. | Nautical. to force (a close-hauled sailing ship under heavy canvas) against a strong wind or sea. |
| 4. | thresh. |
| 5. | to toss, or plunge about. |
| 6. | Nautical. to make way against the wind, tide, etc.; beat. |
| 7. | thresh. |
| 8. | an act or instance of thrashing; beating; blow. |
| 9. | thresh. |
| 10. | Swimming. the upward and downward movement of the legs, as in the crawl. |
| 11. | British Slang. a party, usually with drinks. |
| 12. | thrash out or over, to talk over thoroughly and vigorously in order to reach a decision, conclusion, or understanding; discuss exhaustively. |
,| 1. | to separate the grain or seeds from (a cereal plant or the like) by some mechanical means, as by beating with a flail or by the action of a threshing machine. |
| 2. | to beat as if with a flail. |
| 3. | to thresh wheat, grain, etc. |
| 4. | to deliver blows as if with a flail. |
| 5. | the act of threshing. |
| 6. | thresh out or over. thrash (def. 12). |

| speed metal n. Heavy metal music that is exceptionally harsh and fast. Also called thrash. |
thrash (thrāsh) v. thrashed, thrash·ing, thrash·es v. tr.
thrash outTo discuss fully. [Variant of thresh.] thrash'er n. |
thrash
To move wildly or violently, without accomplishing anything useful. Paging or swapping systems that are overloaded waste most of their time moving data into and out of core (rather than performing useful computation) and are therefore said to thrash. Thrashing can also occur in a cache due to cache conflict or in a multiprocessor (see ping-pong).
Someone who keeps changing his mind (especially about what to work on next) is said to be thrashing. A person frantically trying to execute too many tasks at once (and not spending enough time on any single task) may also be described as thrashing.
Compare multitask.
[The Jargon File]