from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A small beaklike part, such as a projection on the stigma of an orchid, a tubular mouthpart on some insects, or the hooked projection on the head of a tapeworm.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small beak-like process or extension; a small rostrum.
from the GNU version of the Collaborative International Dictionary of English
- n. A small beaklike process or extension of some part; a small rostrum
from The Century Dictionary and Cyclopedia
- n. In botany: Any small beak-shaped process, as in the stigma of many violets; specifically, a modification of the stigma in many orchids, which bears the glands to which the pollen-masses are attached.
- n. A Linnean term for the caulicle or radicle.
- n. In zoology, the fore part of the head of tapeworms or other cestoids, bearing spines or hooklets which are said to be rostellar. See cut under Cestoidea.
- n. [capitalized] [NL.] In conchology, same as Rostellaria.
- n. The combined mouth-parts of the true lice, of the family Pediculidæ.
Latin, diminutive of rōstrum, beak; see rostrum.(American Heritage® Dictionary of the English Language, Fourth Edition)