ETYM Abbrev. from mitten.
1. A mitten; also, a covering for the wrist and hand and not for the fingers.
2. A woman's glove that leaves the fingers uncovered.
3. (Baseball) A large, padded glove worn to protect one's hand when catching the ball.

ETYM Old Eng. mitaine, meteyn, French mitaine, perh. of Celtic origin; cf. Irish miotog, Gael. miotag, Irish and Gael. mutan a muff, a thick glove. Related to Mitt.
A glove that encases the thumb separately from the other four fingers; SYN. mittens.