Crepidula fornicata

from The Collaborative International Dictionary of English v.0.48

Sweetmeat \Sweet"meat`\, n.
   1. Fruit preserved with sugar, as peaches, pears, melons,
      nuts, orange peel, etc.; -- usually in the plural; a
      confect; a confection.
      [1913 Webster]

   2. The paint used in making patent leather.
      [1913 Webster]

   3. (Zool.) A boat shell ({Crepidula fornicata}) of the
      American coast. [Local, U.S.]
      [1913 Webster]