The Collaborative International Dictionary of English v.0.48:

Cant \Cant\, n. [OF., edge, angle, prof. from L. canthus the
   iron ring round a carriage wheel, a wheel, Gr. ? the corner
   of the eye, the felly of a wheel; cf. W. cant the stake or
   tire of a wheel. Cf. Canthus, Canton, Cantle.]
   1. A corner; angle; niche. [Obs.]
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            The first and principal person in the temple was
            Irene, or Peace; she was placed aloft in a cant.
                                                  --B. Jonson.
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   2. An outer or external angle.
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   3. An inclination from a horizontal or vertical line; a slope
      or bevel; a titl. --Totten.
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   4. A sudden thrust, push, kick, or other impulse, producing a
      bias or change of direction; also, the bias or turn so
      give; as, to give a ball a cant.
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   5. (Coopering) A segment forming a side piece in the head of
      a cask. --Knight.
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   6. (Mech.) A segment of he rim of a wooden cogwheel.
      --Knight.
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   7. (Naut.) A piece of wood laid upon the deck of a vessel to
      support the bulkheads.
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   Cant frames, Cant timbers (Naut.), timber at the two ends
      of a ship, rising obliquely from the keel.
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