Mast
M'AST, noun A long, round piece of timber, elevated or designed to be raised perpendicularly or nearly so, on the keel of a ship or other vessel, to which the yards, sails and rigging are attached, and by which they are supported. A mast is a single stick, formed from the trunk of a tree, or it consists of many pieces of timber united by iron bands. Masts are of several kinds, as the main-mast, fore-mast, mizzen-mast, top-mast, top-gallant-mast, etc.
M'AST, noun The fruit of the oak and beech, or other forest trees; nuts; acorns. [It has no plural.]