Thrashing meaning : To beat mercilessly. To defeat utterly. To thresh. To move about wildly or violently; to flail; to labour. To extensively test a software system, giving a program various inputs and observing the behavior and outputs that result. In computer architecture, to cause poor performance of a virtual memory (or paging) system. Action of the verb to thrash. A beating, especially a severe one. A heavy defeat. Excessive paging within virtual storage. Slam dancing. Threshing. (of cereal crop, etc)