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rostellum n. 额嘴,喙 额嘴,喙 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]
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