Drain, n. 1. The act of draining, or of drawing off; gradual and continuous outflow or withdrawal; as, the drain of specie from a country.
2. That means of which anything is drained; a channel; a trench; a water course; a sewer; a sink.
3. pl. The grain from the mashing tub; as, brewers' drains. Halliwell.
Box drain, Counter drain. See under Box, Counter. — Right of drain(Law), an easement or servitude by which one man has a right to convey water in pipes through or over the estate of another. Kent.