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mollusks have an elongated, turreted shell, composed of many whorls. They have a rounded aperture, and a horny multispiral operculum.

e; to scintillate. These stars not twinkle when viewed through telescopes that have large apertures. Sir I. Newton. The western sky twinkled with stars. Sir W. Scott.

Either one of the two apertures in the calamus of a feather.

The siamang; -- called also ungka ape.

A lid, plug, or cover, applied to an aperture so that by its movement, as by swinging, lifting and falling, sliding, turning, or the like, it will open or close the aperture to permit or prevent passage, as of a fluid.

A small aperture; a hole or passage for air or any fluid to escape; as, the vent of a cask; the vent of a mold; a volcanic vent. Look, how thy wounds do bleed at many vents. Shak. Long't was doubtful, both so closely pent, Which first should issue from the narrow vent. Pope.

A turning point; the principal or highest point; top; summit; crown; apex. Specifically: --(a) (Anat.)

o the genus Vertigo, having an elongated or conical spiral shell and usually teeth in the aperture.

A small bottle, usually of glass; a little glass vessel with a narrow aperture intended to be closed with a stopper; as, a vial of medicine. [Written also phial.] Take thou this vial, being then in bed, And this distilled liquor thou off. Shak.

A device used by photographers in printing vignettes, consisting of a screen of paper or glass with a central aperture the edges of which become opaque by intensible gradations.

Specifically: A little mass of some soft or flexible material, such as hay, straw, tow, paper, or old rope yarn, used for retaining a charge of powder in a gun, or for keeping the powder and shot close; also, to diminish or avoid the effects of windage. Also, by extension, a dusk of felt, pasteboard, etc., serving a si…

Bot.) A little American fern (Camptosorus rhizophyllus); -- so called because the fronds taper into slender prolongations which often root at the apex, thus producing new plants. (b) (Zoöl.) A leaf insect. See under Leaf. -- Walking papers, or Walking ticket, an order to leave; dismissal, as from office. [Colloq.] Bar…

ance cut in or beside a door or gate, or the door which is used to close such entrance or aperture. Piers Plowman. "Heaven's wicket." Milton. And so went to the high street, . . . and came to the great tower, but the gate and wicket was fast closed. Ld. Berners. The wicket, often opened, knew the key. Dryden.…

The expressed juice of grapes, esp. when fermented; a beverage or liquor prepared from grapes by squeezing out their juice, and (usually) allowing it to ferment. "Red wine of Gascoigne." Piers Plowman. Wine is a mocker, strong drink is raging, and whosoever is deceived thereby is not wise. Prov. xx. 1. Bacchus, that fi…

, with a dark spot on the breast and another on the crown. Called also wooyen, and wooyen ape.

gated, triangular figure, lying near the ecliptic, its base being on the horizon, and its apex at varying altitudes. It is to be seen only in the evening, after twilight, and in the morning before dawn. It is supposed to be due to sunlight reflected from multitudes of meteoroids revolving about the sun nearly in the pl…