Vermin(n. sing. & pl.) A noxious or mischievous animal; especially, noxious little animals or insects, collectively, as squirrels, rats, mice, flies, lice, bugs, etc.
Vermin(n. sing. & pl.) An animal, in general.
Vermin(n. sing. & pl.) Hence, in contempt, noxious human beings.
Developed by: Abdullah Ibne Alam, Dhaka, Bangladesh