rostellar
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ros·tel·lum
(rŏ-stĕl′əm)n. pl. ros·tel·la (rŏ-stĕl′ə)
A small beaklike part, such as a projection on the stigma of an orchid or the hooked projection on the head of a tapeworm.
[Latin, diminutive of rōstrum, beak; see rostrum.]
ros·tel′lar adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.