Pinnate
Pronunciation : Pin"nate, Pin"na*ted
Part of Speech : a.
Etymology : [L. pinnatus feathered, fr. pinna a feather. See Pin a peg, Pen feather.]
Definition : 1. (Bot.)
Defn: Consisting of several leaflets, or separate portions, arranged on each side of a common petiole, as the leaves of a rosebush, a hickory, or an ash. See Abruptly pinnate, and Illust., under Abruptly.
2. (Zo?l.)
Defn: Having a winglike tuft of long feathers on each side of the neck. Pinnated grouse (Zo?l.), the prairie chicken.
Source : Webster's Unabridged Dictionary, 1913