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Pinna :: Pinna (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..

Water Milfoil :: Water milfoil () Any plant of the genus Myriophyllum, aquatic herbs with whorled leaves, the submersed ones pinnately parted into capillary divisions..

Rowan Tree :: Rowan tree () A european tree (Pyrus aucuparia) related to the apple, but with pinnate leaves and flat corymbs of small white flowers followed by little bright red berries. Called also roan tree, and mountain ash. The name is also applied to two American trees of similar habit (Pyrus Americana, and P. sambucifolia)..

Pinnulate :: Pinnulate (a.) Having each pinna subdivided; -- said of a leaf, or of its pinnae..

Spinner :: Spinnaker (n.) A large triangular sail set upon a boom, -- used when running before the wind..

Pinnacle :: Pinnacle (n.) 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..

Squab :: Spyne (n.) See Pinnace, n., 1 (a)..

Catadromous :: Catadromous (a.) Having the lowest inferior segment of a pinna nearer the rachis than the lowest superior one; -- said of a mode of branching in ferns, and opposed to anadromous..

Pinnet :: Pinnet (n.) A pinnacle.

Pinnated :: Pinnated (a.) 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..

Barque :: Barque (n.) Formerly, any small sailing vessel, as a pinnace, fishing smack, etc.; also, a rowing boat; a barge. Now applied poetically to a sailing vessel or boat of any kind..

Pinnacle :: Pinnacle (n.) Anything resembling a pinnacle; a lofty peak; a pointed summit.

Poinciana :: Poinciana (n.) A prickly tropical shrub (Caesalpinia, formerly Poinciana, pulcherrima), with bipinnate leaves, and racemes of showy orange-red flowers with long crimson filaments..

Principal :: Principal (n.) One of turrets or pinnacles of waxwork and tapers with which the posts and center of a funeral hearse were formerly crowned.

Pinna :: Pinna (n.) A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under Bipinnate..

Pinnatiped :: Pinnatiped (n.) Any bird which has the toes bordered by membranes.

Byssus :: Byssus (n.) 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..

Paripinnate :: Paripinnate (a.) Pinnate with an equal number of leaflets on each side; having no odd leaflet at the end.

Runcinate :: Runcinate (a.) Pinnately cut with the lobes pointing downwards, as the leaf of the dandelion..

Needle :: Needle (n.) Any slender, pointed object, like a needle, as a pointed crystal, a sharp pinnacle of rock, an obelisk, etc..

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