mast

Short definition from Wiktionary

Noun

1. 1
   A tall, slim post or tower, usually tapering upward, used to support, for example, sails or observation platforms on a ship, the main rotor of a helicopter, flags, floodlights, meteorological instruments, or communications equipment, such as an aerial, usually supported by guy-wires (except in the case of a helicopter).
2. 2
   A non-judicial punishment ("NJP"); a disciplinary hearing under which a commanding officer studies and disposes of cases involving those under his command.
3. 3
   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.
4. 4
   The anabolic steroid drostanolone propionate, also known as Masteron
5. 5
   A type of heavy cue, with the broad end of which one strikes the ball.
6. 6
   Initialism of military antishock trousers; inflatable trousers that apply pressure to the inferior half of a patient's body to decrease blood loss and prevent the onset of shock, similar to a tourniquet.

Verb

1. 1
   To supply and fit a mast to (a ship).
2. 2
   To feed on forest seed or fruit.
3. 3
   To produce a very large quantity of fruit or seed in certain years but not others.

Proper noun

1. 1
   A surname.