pinna
n. புறச்செவியின் அகல் மேற்புறம், இறகு வடிவ இலையின் உள்ளுறுப்புக் கிளையிலை, துடுப்பு, துடுப்பமைவு.
Pin"na, n.; pl. Pinnæ, E. Pinnas. Etym: [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. 2. (Zoöl.) Defn: One of the divisions of a pinnate part or organ. 3. Etym: [L. pinna, akin to Gr. (Zoöl.) Defn: 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. 4. (Anat.) Defn: The auricle of the ear. See Ear.