Search Result for "seashell": 
Wordnet 3.0

NOUN (1)

1. the shell of a marine organism; 



The Collaborative International Dictionary of English v.0.48:

Seashell \Sea"shell`\, n. (Zool.)
   The shell of any marine mollusk.
   [1913 Webster]


WordNet (r) 3.0 (2006):

seashell
    n 1: the shell of a marine organism