‖n.; pl. Pinnæ 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. (Zool.) One of the divisions of a pinnate part or organ. [ 1913 Webster ]

3. [ L. pinna, akin to Gr. &unr_;. ] (Zool.) 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 ]

n. [ F. pinasse; cf. It. pinassa, pinazza, Sp. pinaza; all from L. pinus a pine tree, anything made of pine, e.g., a ship. Cf. Pine a tree. ] 1. (Naut.) (a) A small vessel propelled by sails or oars, formerly employed as a tender, or for coast defence; -- called originally, spynace or spyne. (b) A man-of-war's boat. [ 1913 Webster ]

Whilst our pinnace anchors in the Downs. Shak. [ 1913 Webster ]

2. A procuress; a pimp. [ Obs. ] B. Jonson. [ 1913 Webster ]

v. t. [ imp. & p. p. Pinnacled p. pr. & vb. n. Pinnacling ] To build or furnish with a pinnacle or pinnacles. T. Warton. [ 1913 Webster ]

n. [ OE. pinacle, F. pinacle, L. pinnaculum, fr. pinna pinnacle, feather. See Pin a peg. ] 1. (Arch.) An architectural member, upright, and generally ending in a small spire, -- used to finish a buttress, to constitute a part in a proportion, as where pinnacles flank a gable or spire, and the like. Pinnacles may be considered primarily as added weight, where it is necessary to resist the thrust of an arch, etc. [ 1913 Webster ]

Some renowned metropolis
With glistering spires and pinnacles around. Milton. [ 1913 Webster ]

2. Anything resembling a pinnacle; a lofty peak; a pointed summit. [ 1913 Webster ]

Three silent pinnacles of aged snow. Tennyson. [ 1913 Webster ]

The slippery tops of human state,
The gilded pinnacles of fate. Cowley. [ 1913 Webster ]

n. [ Cf. Pinfold. ] Poundage of cattle. See Pound. [ Obs. ] [ 1913 Webster ]

{ } a. [ L. pinnatus feathered, fr. pinna a feather. See Pin a peg, Pen feather. ] 1. (Bot.) Consisting of several leaflets, or separate portions, arranged on each side of a common petiole, as the leaves of a rosebush, a hickory, or an ash. See Abruptly pinnate, and Illust., under Abruptly. [ 1913 Webster ]

2. (Zool.) Having a winglike tuft of long feathers on each side of the neck. [ 1913 Webster ]

Pinnated grouse (Zool.), the prairie chicken. [ 1913 Webster ]

adv. In a pinnate manner. [ 1913 Webster ]

a. [ L. pinnatus feathered + root of findere to split: cf. F. pinnatifide. ] (Bot.) Divided in a pinnate manner, with the divisions not reaching to the midrib. [ 1913 Webster ]

a. [ See Pinnate, and Lobate. ] (Bot.) Having lobes arranged in a pinnate manner. [ 1913 Webster ]

n. (Zool.) Any bird which has the toes bordered by membranes. [ 1913 Webster ]