penna

A contour feather of a bird, as distinguished from a down feather or a plume.

In ornithology, a feather; a plume; specifically, a contour-feather, as distinguished from a down-feather or plumule; especially, one of the large stiff feathers of the wings or tail; one of the remiges or rectrices. See feather.

Same as pen-case.

A perfect, or normal, feather.

a contour feather