— pinnular /pin"yeuh leuhr/ , adj.
/pin"yoohl/ , n.
1. Zool.
a. a part or organ resembling a barb of a feather, a fin, or the like.
b. a finlet.
2. Bot. a secondary pinna, one of the pinnately disposed divisions of a bipinnate leaf.
3. a metal plate with a small hole in it, used as a sight in a quadrant.
[ 1585-95; pinnula PINNULA ]