Available Definitions:
1) v. i. - To move the lips with the mouth closed; to mumble, as in sulkiness.
2) v. i. - To talk imperfectly, brokenly, or feebly; to chatter unintelligibly.
3) v. i. - To cheat; to deceive; to play the beggar.
4) v. i. - To be sullen or sulky.
5) v. t. - To utter imperfectly, brokenly, or feebly.
6) v. t. - To work over with the mouth; to mumble; as, to mump food.
7) v. t. - To deprive of (something) by cheating; to impose upon.