| pilar | Pilary Synonym: hairy. Origin: L. Pilus, hair (05 Mar 2000) |
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| pilar cyst | A common cyst of the skin and subcutis which contains sebum and keratin, and is lined by pale-staining stratified epithelial cells derived from follicular trichilemma. Synonym: trichilemmal cyst. (05 Mar 2000) |
| pilar tumour of scalp | A solitary tumour of the scalp in elderly women that may ulcerate; microscopically resembles squamous cell carcinoma composed of glycogen-rich clear cells, but is benign. Synonym: proliferating tricholemmal cyst. (05 Mar 2000) |
| pilch | A gown or case of skin, or one trimmed or lined with fur. Origin: AS. Pylce, pylece, LL. Pellicia. See Pelisse, and Pelt skin. Source: Websters Dictionary (01 Mar 1998) |
| pilchard | <zoology> A small European food fish (Clupea pilchardus) resembling the herring, but thicker and rounder. It is sometimes taken in great numbers on the coast of England. "Fools are as like husbands as pilchards are to herrings." (Shak) Origin: Cf. It. Pilseir, W. Pilcod minnows. Source: Websters Dictionary (01 Mar 1998) |
| pilcher | <zoology> The pilchard. Source: Websters Dictionary (01 Mar 1998) |
| pilcrow | A paragraph mark, <para/. Origin: A corruption of Paragraph. Source: Websters Dictionary (01 Mar 1998) |
| pile | 1. To lay or throw into a pile or heap; to heap up; to collect into a mass; to accumulate; to amass; often with up; as, to pile up wood. "Hills piled on hills." . "Life piled on life." . "The labour of an age in piled stones." (Milton) 2. To cover with heaps; or in great abundance; to fill or overfill; to load. To pile arms or muskets, to place three guns together so that they may stand upright, supporting each other; to stack arms. Origin: Piled; Piling. 1. A hair; hence, the fibre of wool, cotton, and the like; also, the nap when thick or heavy, as of carpeting and velvet. "Velvet soft, or plush with shaggy pile." (Cowper) 2. <zoology> A covering of hair or fur. Origin: L. Pilus hair. Cf. Peruke. 1. A large stake, or piece of timber, pointed and driven into the earth, as at the bottom of a river, or in a harbor where the ground is soft, for the support of a building, a pier, or other superstructure, or to form a cofferdam, etc. Tubular iron piles are now much used. 2. [Cf. F. Pile. One of the ordinaries or subordinaries having the form of a wedge, usually placed palewise, with the broadest end uppermost. Pile bridge, a bridge of which the roadway is supported on piles. Pile cap, a beam resting upon and connecting the heads of piles. Pile driver, or Pile engine, an apparatus for driving down piles, consisting usually of a high frame, with suitable appliances for raising to a height (by animal or steam power, the explosion of gunpowder, etc) a heavy mass of iron, which falls upon the pile. Pile dwelling. See Lake dwelling, under Lake. <physics> Pile plank, a thick plank used as a pile in sheet piling. See Sheet piling, under Piling. Pneumatic pile. See Pneumatic. Screw pile, one with a screw at the lower end, and sunk by rotation aided by pressure. Origin: AS. Pil arrow, stake, L. Pilum javelin; but cf. Also L. Pila pillar. 1. A mass of things heaped together; a heap; as, a pile of stones; a pile of wood. 2. A mass formed in layers; as, a pile of shot. 3. A funeral pile; a pyre. 4. A large building, or mass of buildings. "The pile o'erlooked the town and drew the fight." (Dryden) 5. Same as Fagot. 6. <physics> A vertical series of alternate disks of two dissimilar metals, as copper and zinc, laid up with disks of cloth or paper moistened with acid water between them, for producing a current of electricity; commonly called Volta's pile, voltaic pile, or galvanic pile. The term is sometimes applied to other forms of apparatus designed to produce a current of electricity, or as synonymous with battery; as, for instance, to an apparatus for generating a current of electricity by the action of heat, usually called a thermopile. 7. [F. Pile pile, an engraved die, L. Pila a pillar] The reverse of a coin. See Reverse. Cross and pile. See Cross. Dry pile. See Dry. Origin: F. Pile, L. Pila a pillar, a pier or mole of stone. Cf. Pillar. Source: Websters Dictionary (01 Mar 1998) |
| pileated | 1. Having the form of a cap for the head. 2. <zoology> Having a crest covering the pileus, or whole top of the head. <zoology> Pileated woodpecker, a large American woodpecker (Ceophloeus pileatus). It is black, with a bright red pointed crest. Synonym: logcock, and woodcock. Origin: L. Pileatus, fr. Pileus a felt cap or hat. Source: Websters Dictionary (01 Mar 1998) |
| pilentum | Origin: L. An easy chariot or carriage, used by Roman ladies, and in which the vessels, etc, for sacred rites were carried. Source: Websters Dictionary (01 Mar 1998) |
| pileorhiza | Origin: NL, fr. Gr. A cap + root. <botany> A cap of cells which covers the growing extremity of a root; a rootcap. Source: Websters Dictionary (01 Mar 1998) |
| pileous | Synonym: hairy. Origin: L. Pilus, hair (05 Mar 2000) |
| pileous gland | A sebaceous gland emptying into the hair follicle. (05 Mar 2000) |
| piles | <medicine> The small, troublesome tumours or swellings about the anus and lower part of the rectum which are technically called haemorrhoids. Origin: The singular pile is sometimes used. Blind piles, haemorrhoids which do not bleed. Origin: L. Pila a ball. Cf. Pill a medicine. Source: Websters Dictionary (01 Mar 1998) |
| pileus | Origin: L, a felt cap. 1. A kind of skull cap of felt. 2. <botany> The expanded upper portion of many of the fungi. See Mushroom. 3. <zoology> The top of the head of a bird, from the bill to the nape. Source: Websters Dictionary (01 Mar 1998) |