Dictionary
si•phun•cle
Pronunciation: (sī'fung-kul), [key]—
n.
1. (in a nautilus) the connecting tube that passes from the end of the body through all of the septa to the innermost chamber.
2. Entomol.an aphid cornicle.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.