from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A contour feather of a bird, as distinguished from a down feather or a plume.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a contour feather
from the GNU version of the Collaborative International Dictionary of English
- n. A perfect, or normal, feather.
from The Century Dictionary and Cyclopedia
- n. 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.
- n. Same as pen-case.
Latin, feather; see pet- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin penna ("feather") (Wiktionary)