Surf, n.

n. [Cf. O. Fr. surfot, the rising of billow upon billow, or the interchanged swelling of several waves, and Prov. Ger. surfen, sürfen, to suck in, to drink down, to swallow.]

1. The swell of the sea which breaks upon the shore, or upon sand-banks or rocks.
2. (Agric.) The bottom or conduit of a drain. [Prov. Eng.]