The Collaborative International Dictionary of English v.0.48:

Bound \Bound\ (bound), n. [OE. bounde, bunne, OF. bonne, bonde,
   bodne, F. borne, fr. LL. bodina, bodena, bonna; prob. of
   Celtic origin; cf. Arm. bonn boundary, limit, and boden, bod,
   a tuft or cluster of trees, by which a boundary or limit
   could be marked. Cf. Bourne.]
   The external or limiting line, either real or imaginary, of
   any object or space; that which limits or restrains, or
   within which something is limited or restrained; limit;
   confine; extent; boundary.
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         He hath compassed the waters with bounds. --Job xxvi.
                                                  10.
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         On earth's remotest bounds.              --Campbell.
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         And mete the bounds of hate and love.    --Tennyson.
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   To keep within bounds, not to exceed or pass beyond
      assigned limits; to act with propriety or discretion.
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   Syn: See Boundary.
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