One of the four principal compass points, specifically 270°, conventionally directed to the left on maps; the direction of the setting sun at an equinox, abbreviated as W. Situated or lying in or toward the west; westward. (meteorology) Of wind: from the west. Of or pertaining to the west; western. From the West; occidental. (ecclesiastial) Designating, or situated in, that part of a church which is opposite to, and farthest from, the east, or the part containing the chancel and choir. Towards the west; westwards. To move to the west; (of the sun) to set. [from 15th c.]