pinnate

adj

1. Resembling a feather.
2. Having two rows of branches, lobes, leaflets, or veins arranged on each side of a common axis

   “Mimosa is a tree with pinnate leaves.”

   “The trunk is unbranched, often much shortened, and bears a crown of feathery or pinnate fronds.”

3. Having a winglike tuft of long feathers on each side of the neck.

   “the pinnate grouse, or prairie chicken”

4. Having wings or fins.