Dorse

from The Collaborative International Dictionary of English v.0.48

Dorse \Dorse\, n. [Cf. L. dorsum the back. See {Dorsel},
   {Dosel}.]
   1. Same as {dorsal}, n. [Obs.]
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   2. The back of a book. [Obs.]
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            Books, all richly bound, with gilt dorses. --Wood.
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from The Collaborative International Dictionary of English v.0.48

Dorse \Dorse\, n. (Zool.)
   The Baltic or variable cod ({Gadus callarias}), by some
   believed to be the young of the common codfish.
   [1913 Webster]