Ă'corn, n.

n. [A-S. æcern, æceren, from æc, or ac, oak, and corn, corn, grain; Icel. akarn, Dan. agern, D. aker, L. Ger. ecker, Goth. akran, fruit, orig. the grain or fruit of the oak; Goth. kaurn, corn.]

1. The seed or fruit of the oak, being an oval nut growing in a rough cup.
2. (Naut.) A small ornamental piece of wood, of a conical shape, fixed on the point of the spindle above the vane, on the mast head, to keep the vane from being blown off. Mar. Dict.
3. (Zoöl.) The Lepas, a tribe of animals related to the barnacle, growing on a fixed stem, and having a multivalvular shell. See CIRRIPED. Dana.