Dictionary
rec•trix
Pronunciation: (rek'triks), [key]—
n.,
—pl. rec•tri•cesPronunciation: (rek-trī'sēz, rek'tru-sēz"). [key]
Ornith.
one of the tail feathers of a bird controlling direction during flight.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.