VERM'IN, n. sing, and plu; used chiefly in the plural. [L. vermes, worms.]

1. All sorts of small animals which are destructive to grain or other produce; all noxious little animals or insects, as squirrels, rats, mice, worms, grubs, flies, &c.

These vermin do great injuries in the field.

2. Used of noxious human beings in contempt; as base vermin.