1. The act of drawing a liquid off gradually; the act of emptying.
2. The act of gradually exhausting.
3. A conduit for draining liquid, as a ditch or a pipe.
drain, vb.
1. To draw (a liquid) off gradually (the farmer drained water from the property).
2. To exhaust gradually (the facility has drained the area’s natural resources).
3. To empty gradually (the water drained).