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
Latin, feather; see pet- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)