camber

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A slightly arched surface, as of a road, a ship's deck, an airfoil, or a ski.
• noun The condition of having an arched surface.
• noun A setting of automobile wheels in which they are closer together at the bottom than at the top.
• intransitive & transitive verb To arch or cause to arch slightly.

from The Century Dictionary.

• noun A harbor.
• To arch; bend; curve, as ship-planks.
• noun A convexity upon an upper surface, as of a deck amidships, a bridge, a beam, or a lintel.
• noun The curve of a ship's plank.
• noun A small dock or part of a dock, protected by a breakwater, where boats and small craft may lie quietly.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To cut bend to an upward curve; to construct, as a deck, with an upward curve.
• intransitive verb To curve upward.
• noun (Shipbuilding) An upward convexity of a deck or other surface.
• noun (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.
• noun (Arch.) an arch whose intrados, though apparently straight, has a slightly concave curve upward.
• noun (Arch.) a beam whose under side has a concave curve upward.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A slight convexity, arching or curvature of a surface of a road, a beam, roof deck, ship's deck etc., so that liquids will flow off the sides.
• noun The slope of a curved road created to minimize the effect of centrifugal force.
• noun automotive A vertical alignment of the wheels of a road vehicle with positive camber signifying that the wheels are closer together at the bottom than at the top.
• noun The curvature of an airfoil.
• noun nautical A small enclosed dock in which timber for masts (etc.) is kept to weather.
• verb To curve upwards in the middle.
• verb To adjust the camber of the wheels of a vehicle.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb curve upward in the middle
• noun the alignment of the wheels of a motor vehicle closer together at the bottom than at the top
• noun a slight convexity (as of the surface of a road)
• noun 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