Source : Webster's Revised Unabridged Dictionary (1913)

Ear-shell \Ear"-shell`\, n. (Zo["o]l.)
   A flattened marine univalve shell of the genus {Haliotis}; --
   called also {sea-ear}. See {Abalone}.

Source : WordNet®

ear-shell
     n : any of various large edible marine gastropods of the genus
         Haliotis having an ear-shaped shell with pearly interior
         [syn: {abalone}]