Did you mean mast?
°A tall, slim post or tower, usually tapering upward, used to support, for examples, the sails on a ship, flags, floodlights, or communications equipment such as an aerial.
°The fruit of forest-trees (beech, oak, chestnut, pecan, &c.), especially if having fallen from the tree, used as fodder for pigs and other animals.
°To supply and fit a mast to a ship.