Pronunciation: (ro-stel'um), [key]
—pl. ros•tel•laPronunciation: (ro-stel'u). [key]
1. Biol.any small, beaklike process.
2. Bot.a beaklike modification of the stigma in many orchids.
a. a projecting part of the scolex in certain tapeworms.
b. a part of the mouth in many insects, designed for sucking.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.