n. A pit or hole in the ground; specifically, in mining, a shaft or pit sunk into the earth.n. A furrow or long hollow, such as is cut by a tool; a rut or furrow, such as is formed in the ground or in a rock by the action of water; a channel, usually an elongated narrow channel, formed by any agency.n. Specifically A long and regular incision cut by a tool, or a narrow channel formed in any way (as in a part of a construction), for something (as another part) to fit into or move in.n. Especially— The sunken or plowed channel on the edge of a matched board, to receive the tongue.n. The spiral rifling of a gun.n. In the wind-chest of an organ, one of the channels or passages into which the wind in admitted by the pallets, and with which the pipes belonging to a given key are directly or indirectly connected. When a given key is struck, its pallet is opened, and the groove filled with compressed air. Whether all the pipes connected with the groove are sounded or not depends on how many stops are drawn. Also grove.n. In anatomy and zoology, a natural furrow or longitudinal hollow or impression, especially one which is destined to receive one of the organs in repose: as, the antennal groove; the rostral groove in the Rhynchophora, etc.n. Figuratively, a fixed routine; a narrow, unchanging course; a rut: as, life is apt to run in a groove; a groove of thought or of action.To cut or make a groove or channel in; furrow.To form as or fix in a groove; make by cutting a groove or grooves.