Camber

Part of speech: noun (n.)

1. An upward convexity of a deck or other surface; as, she has a high camber (said of a vessel having an unusual convexity of deck).

2. An upward concavity in the under side of a beam, girder, or lintel; also, a slight upward concavity in a straight arch. See Hogback. Camber arch (Arch.), an arch whose intrados, though apparently straight, has a slightly concave curve upward. -- Camber beam (Arch.), a beam whose under side has a concave curve upward.

Part of speech: verb (v.)

To cut bend to an upward curve; to construct, as a deck, with an upward curve.

Part of speech: verb (v.)

To curve upward.