penna

noun, plural pen·nae [pen-ee] /ˈpɛn i/. Ornithology.

1. a contour feather, as distinguished from a down feather, plume, etc.

1. Pennsylvania.

noun plural -nae (-niː)

1. ornithol any large feather that has a vane and forms part of the main plumage of a bird

abbreviation for

1. Pennsylvania