Onward movement in a particular direction; progress: the course of events. Movement in time; duration: in the course of a year. The direction of continuing movement: took a northern course. The route or path taken by something, such as a stream, that moves. See Synonyms at way. Sports A designated area of land or water on which a race is held: the course of a marathon. Sports A golf course. A mode of action or behavior: followed the best course and invested her money. A typical or natural manner of proceeding or developing; customary passage: a fad that ran its course. A systematic or orderly succession; a sequence: a course of medical treatments. A continuous layer of building material, such as brick or tile, on a wall or roof of a building. A complete body of prescribed studies constituting a curriculum: a four-year course in engineering. A unit of such a curriculum: took an introductory course in chemistry; passed her calculus course. A part of a meal served as a unit at one time: The first course was a delicious soup. Nautical The lowest sail on a mast of a square-rigged ship. A point on the compass, especially the one toward which a vehicle, such as a ship, is moving. To move swiftly through or over; traverse: ships coursing the seas. To hunt (game) with hounds. To set (hounds) to chase game. To proceed or move swiftly along a specified course: "Big tears now coursed down her face\u201d ( Iris Murdoch). To hunt game with hounds. in due course At the proper or right time. of course In the natural or expected order of things; naturally. of course Without any doubt; certainly.