Rostellum

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Rostellum \Ros*tel"lum\, n.; pl. {Rostella}. [L. See {Rostel}.]
     A small beaklike process or extension of some part; a small
     rostrum; as, the rostellum of the stigma of violets, or of
     the operculum of many mosses; the rostellum on the head of a
     tapeworm.
     [1913 Webster]