What is "vergeboard"

Vergeboard \Verge"board`\, n. [Verge + board. Cf. Bargeboard.] (Arch.) The ornament of woodwork upon the gable of a house, used extensively in the 15th century. It was generally suspended from the edge of the projecting roof (see Verge, n., 4), and in position parallel to the gable wall. Called also bargeboard.

n. A barge board.