Main Entry:

ros·tel·lum

Pronunciation:

\rä-ˈste-ləm\

Function:

noun

Etymology:

New Latin, from Latin, diminutive of rostrum beak

Date:

circa 1826

: a small process resembling a beak : a diminutive rostrum: as a: an extension of the stigma of an orchid flower b: an anterior prolongation of the head of a tapeworm bearing hooks

— ros·tel·lar \rä-ˈste-lər\ adjective