from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A structure at the base of the mouth of most mollusks over which the radula is drawn back and forth in breaking up food.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a projection in the mouths of most molluscs; it is used, with the radula to break up food
from the GNU version of the Collaborative International Dictionary of English
- n. A special structure found in the mouth of most mollusks, except bivalves. It consists of several muscles and a cartilage which supports a chitinous radula, or lingual ribbon, armed with teeth. Also applied to the radula alone. See radula.
from The Century Dictionary and Cyclopedia
- n. The whole radular apparatus, buccal mass, lingual ribbon, or “tongue” of certain mollusks.
And while he speaks of the teeth and that which serves these animals for a tongue, it is plain from the context that he means in the one case the two halves of the parrot-like beak, and in the other the anterior end of the odontophore.