n 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, usually supported by guy-wires.
v To supply and fit a mast to a ship
n The fruit of forest-trees (beech, oak, chestnut, pecan, etc.), especially if having fallen from the tree, used as fodder for pigs and other animals.
v (context|of swine and other animals) To feed on forest seed or fruit.
v (agriculture|forestry|ecology|of a population of plants) To vary fruit and seed production in multi-year cycles.