from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Botany A leaflet or primary division of a pinnately compound leaf.
- n. Zoology A feather, wing, fin, or similar appendage.
- n. Anatomy See auricle.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The visible part of the ear that resides outside of the head, the auricle.
- n. A leaflet or primary segment of a pinnate compound leaf.
- n. A feather, wing, fin, or other similar appendage.
from the GNU version of the Collaborative International Dictionary of English
- n. A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under bipinnate.
- n. One of the primary divisions of a decompound leaf.
- n. One of the divisions of a pinnate part or organ.
- n. Any species of Pinna, a genus of large bivalve mollusks found in all warm seas. The byssus consists of a large number of long, silky fibers, which have been used in manufacturing woven fabrics, as a curiosity.
- n. The auricle of the ear. See Ear.
from The Century Dictionary and Cyclopedia
- n. In anat. and zoöl.:
- n. A feather. See penna.
- n. A bird's wing. See pinion.
- n. A fish's fin: the usual technical name.
- n. Some wing-like or fin-like part or organ, as the flipper of a seal or cetacean.
- n. The outer ear, which projects from the head; the auricle, or pavilion of the ear. See cut under ear.
- n. The nostril, or wing of the nose.
- n. One of the smaller branches of some polyps, as plumularians.
- n. In entomology, a small oblique ridge forming one of the lines of a pinnate surface. See pinnate.
- n. In botany, one of the primary divisions of a pinnate leaf: applied most commonly to ferns.
- n. the alæ nasi; the nostrils.
- n. A genus of bivalves, typical of the family Pinnidæ.
- n. [l. c] A bivalve mollusk of the genus Pinna.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the externally visible cartilaginous structure of the external ear
- n. division of a usually pinnately divided leaf
“And after all, didn’t somebody just make up the word pinna, too?”
In the pinna also is found the so-called pinna-guard.
The external ear consists of an expanded portion known as the pinna or _auricle_, and of a passage, the auditory canal or _meatus_, leading inwards from it.
Normally, the outer ear, known as the pinna, collects sound waves and directs them into the ear canal, which carries the sound waves to the eardrum.
"The pinna is a variety of shell-fish not unlike the mussel; it fastens itself to the rocks and from between its shells gives out threads something like those of the spider or silkworm.
By contrast, the Atomic Floyd HiDefjaxes are shaped so they nestle snugly into your ears, and stay there: they've got a curve in the shape of the earpieces that wedges them in your pinna.
The external ear is also called the auricula or pinna.
With a graceful gesture she swept the tresses framing her right cheek behind a delicate ear, revealing that the pinna contained two openings to the auditory canal, one in the center, and a smaller one near the upper edge.
In most dogs, the pinna—the outer, visible part of the ear—rotates to better open a channel from the sound source to the inner ear.
She had a steel bar through the top of her ear, through her pinna, which was a useful Scrabble word.