The Collaborative International Dictionary of English v.0.48:

Camber \Cam"ber\, n. [Of. cambre bent, curved; akin to F.
   cambrer to vault, to bend, fr. L. camerare to arch over, fr.
   camera vault, arch. See Chamber, and cf. Camerate.]
   1. (Shipbuilding) 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).
      [1913 Webster]

   2. (Arch.) An upward concavity in the under side of a beam,
      girder, or lintel; also, a slight upward concavity in a
      straight arch. See Hogback.
      [1913 Webster]

   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.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Camber \Cam"ber\, v. t. [imp. & p. p. Cambered; p. pr. & vb.
   n. Cambering.]
   To cut bend to an upward curve; to construct, as a deck, with
   an upward curve.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Camber \Cam"ber\, v. i.
   To curve upward.
   [1913 Webster]

WordNet (r) 3.0 (2006):

camber
    n 1: a slight convexity (as of the surface of a road)
    2: a slope in the turn of a road or track; the outside is higher
       than the inside in order to reduce the effects of centrifugal
       force [syn: bank, cant, camber]
    3: the alignment of the wheels of a motor vehicle closer
       together at the bottom than at the top
    v 1: curve upward in the middle

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "camber":
   amplitude, apse, arcade, arcature, arch, arched roof, archway,
   bellying, bulging, ceilinged roof, concameration, concha,
   convexedness, convexity, convexness, cove, cupola, dome,
   excurvation, excurvature, flight path, geodesic dome, gibbosity,
   gibbousness, igloo, keystone, ogive, skewback, skin effect,
   skin friction, slip, span, stagger, tuberosity, tuberousness,
   vault, vaulting, voussoir