The Collaborative International Dictionary of English v.0.48:

Coquille \Co*quille"\ (k[-o]*k[=e]l"; F. k[-o]`k[=e]"y'), n.
   [F.]
   Lit., a shell; hence:
   (a) A shell or shell-like dish or mold in which viands are
       served.
   (b) The expansion of the guard of a sword, dagger, etc.
   (c) A form of ruching used as a dress trimming or for
       neckwear, and named from the manner in which it is
       gathered or fulled.
       [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

coquille
    n 1: seafood served in a scallop shell
    2: a dish in the form of a scallop shell