n. Literally, a tree: used in this sense chiefly in botanical names.n. In mech.: The main support or beam of a machine.n. The principal spindle or axis of a wheel or pinion communicating motion to the other moving parts.n. A grass-plot; a lawn; a green.n. A garden of herbs or of flowering plants; a flower-bed or flower-garden.n. 3. A collection of fruit-trees; an orchard.n. A bower formed by trees, shrubs, or vines intertwined, or trained over a latticework, so as to make a leafy roof, and usually provided with seats; formerly, any shaded walk.n. A platform of boards upon which sea-island cotton is dried to prevent heating and improve the luster.