Definition of cull

culled; culling; culls Definition of cull (Entry 1 of 2) transitive verb 1: to select from a group : CHOOSE culled the best passages from the poet's work Damaged fruits are culled before the produce is shipped. 2: to reduce or control the size of (something, such as a herd) by removal (as by hunting or slaughter) of especially weak or sick individuals The town issued hunting licenses in order to cull the deer population. culling a herd of cattle also : to hunt or kill (individuals) for culling culling diseased cows culled hundreds of deer