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Spiracle :: Spiracle (n.) A tubular orifice communicating with the gill cavity of certain ganoid and all elasmobranch fishes. It is the modified first gill cleft.

Lip :: Lip (n.) One of the two fleshy folds which surround the orifice of the mouth in man and many other animals. In man the lips are organs of speech essential to certain articulations. Hence, by a figure they denote the mouth, or all the organs of speech, and sometimes speech itself..

Squirt :: Squirt (v. t.) To drive or eject in a stream out of a narrow pipe or orifice; as, to squirt water..

Whistle :: Whistle (v. i.) To make a kind of musical sound, or series of sounds, by forcing the breath through a small orifice formed by contracting the lips; also, to emit a similar sound, or series of notes, from the mouth or beak, as birds..

Sprit :: Sprit (v. i.) To throw out with force from a narrow orifice; to eject; to spurt out.

Sinus :: Sinus (n.) A narrow, elongated cavity, in which pus is collected; an elongated abscess with only a small orifice..

Orifice :: Orifice (n.) A mouth or aperture, as of a tube, pipe, etc.; an opening; as, the orifice of an artery or vein; the orifice of a wound..

Nipple :: Nipple (n.) Any small projection or article in which there is an orifice for discharging a fluid, or for other purposes; as, the nipple of a nursing bottle; the nipple of a percussion lock, or that part on which the cap is put and through which the fire passes to the charge..

Whistle :: Whistle (v. i.) The shrill sound made by wind passing among trees or through crevices, or that made by bullet, or the like, passing rapidly through the air; the shrill noise (much used as a signal, etc.) made by steam or gas escaping through a small orifice, or impinging against the edge of a metallic bell or cup..

Ovule :: Ovule (n.) The rudiment of a seed. It grows from a placenta, and consists of a soft nucleus within two delicate coatings. The attached base of the ovule is the hilum, the coatings are united with the nucleus at the chalaza, and their minute orifice is the foramen..

Wrench :: Wrench (v. t.) An instrument, often a simple bar or lever with jaws or an angular orifice either at the end or between the ends, for exerting a twisting strain, as in turning bolts, nuts, screw taps, etc.; a screw key. Many wrenches have adjustable jaws for grasping nuts, etc., of different sizes..

Stal :: Staktometer (n.) A drop measurer; a glass tube tapering to a small orifice at the point, and having a bulb in the middle, used for finding the number of drops in equal quantities of different liquids. See Pipette..

Stenostome :: Stenosis (n.) A narrowing of the opening or hollow of any passage, tube, or orifice; as, stenosis of the pylorus. It differs from stricture in being applied especially to diffused rather than localized contractions, and in always indicating an origin organic and not spasmodic..

Foramen :: Foramen (n.) A small opening, perforation, or orifice; a fenestra..

Hiss :: Hiss (n.) The noise made by steam escaping through a narrow orifice, or by water falling on a hot stove..

Squirt :: Squirt (v. i.) To be thrown out, or ejected, in a rapid stream, from a narrow orifice; -- said of liquids..

Hydroscope :: Hydroscope (n.) A kind of water clock, used anciently for measuring time, the water tricking from an orifice at the end of a graduated tube..

Hymen :: Hymen (n.) A fold of muscous membrane often found at the orifice of the vagina; the vaginal membrane.

Blast :: Blast (n.) A forcible stream of air from an orifice, as from a bellows, the mouth, etc. Hence: The continuous blowing to which one charge of ore or metal is subjected in a furnace; as, to melt so many tons of iron at a blast..

Pore :: Pore (v.) One of the minute orifices in an animal or vegetable membrane, for transpiration, absorption, etc..

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