to draw off by degrees; to cause to flow gradually out or off; hence, to cause the exhaustion of.-to exhaust of liquid contents by drawing them off; to make gradually dry or empty; to remove surface water, as from streets, by gutters, etc.; to deprive of moisture; hence, to exhaust; to empty of wealth, resources, or the like; as, to drain a country of its specie.-to filter.-to flow gradually; as, the water of low ground drains off.-to become emptied of liquor by flowing or dropping; as, let the vessel stand and drain.-the act of draining, or of drawing off; gradual and continuous outflow or withdrawal; as, the drain of specie from a country.-that means of which anything is drained; a channel; a trench; a water course; a sewer; a sink.-the grain from the mashing tub; as, brewers' drains.