weevil , n :
Any of several small herbivorous beetles in the superfamily Curculionoidea, many having a distinctive snout.
Any of several small herbivorous beetles in the family Curculionidae belonging to the superfamily Curculionoidea.
Any of several similar but more distantly related beetles such as the biscuit weevil (Stegobium paniceum).
(figuratively, derogatory) A loathsome person.