Found 2 items, similar to pinna.
English → English (WordNet) Definition: pinna pinna n 1: division of a usually pinnately divided leaf [syn: pinnule] 2: the externally visible cartilaginous structure of the external ear [syn: auricle, ear] [also: pinnae (pl)]
English → English (gcide) Definition: Pinna Pinna \Pin"na\, n.; pl. Pinn[ae], E. Pinnas. [L., a feather.] 1. (Bot.) (a) A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf , under Bipinnate. (b) One of the primary divisions of a decompound leaf. [1913 Webster] 2. (Zo["o]l.) One of the divisions of a pinnate part or organ. [1913 Webster] 3. [L. pinna, akin to Gr. ?.] (Zo["o]l.) 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. [1913 Webster] 4. (Anat.) The auricle of the ear. See Ear. [1913 Webster] Byssus \Bys"sus\, n.; pl. E. Byssuses; L. Byssi.[L. byssus fine flax, fine linen or cotton, Gr. by`ssos .] [1913 Webster] 1. A cloth of exceedingly fine texture, used by the ancients. It is disputed whether it was of cotton, linen, or silk. [Written also byss and byssin.] [1913 Webster] 2. (Zo["o]l.) A tuft of long, tough filaments which are formed in a groove of the foot, and issue from between the valves of certain bivalve mollusks, as the Pinna and Mytilus, by which they attach themselves to rocks, etc. [1913 Webster] 3. (Bot.) An obsolete name for certain fungi composed of slender threads. [1913 Webster] 4. Asbestus. [1913 Webster]