A pole, or long, strong, round piece of timber, or spar, set upright in a boat or vessel, to sustain the sails, yards, rigging, etc. A mast may also consist of several pieces of timber united by iron bands, or of a hollow pillar of iron or steel.

The vertical post of a derrick or crane.

A spar or strut to which tie wires or guys are attached for stiffening purposes.

To furnish with a mast or masts; to put the masts of in position; as, to mast a ship.

The fruit of the oak and beech, or other forest trees; nuts; acorns.

The fruit of oak, hickory, beech, and similar trees, and the seeds of pines. Mast is a principal food for many species of wildlife.

Fruits, berries and nuts produced by vegetation and consumed by wildlife for food. Hard mast is the fruit or nuts of species such as oaks, beech, walnuts and hickories and serves as a fall and winter food. Soft mast is the fruit and berries of species such as dogwood, huckleberry, grape, raspberry and blackberry, and serves as a spring and summer food.

the fruit of flowering trees used by wildlife for food.