Part 293

As fine a ship's company as was ever piped aloft.

Marryat.

3. To furnish or equip with pipes; as, to pipe an engine, or a building.

Pipe" clay` (kl`). A plastic, unctuous clay of a grayish white color, -- used in making tobacco pipes and various kinds of earthenware, in scouring cloth, and in cleansing soldiers' equipments.

Pipe"clay`, v. t. 1. To whiten or clean with pipe clay, as a soldier's accouterments.

2. To clear off; as, to pipeclay accounts. [Slang, Eng.]

Piped (?), a. Formed with a pipe; having pipe or pipes; tubular.

Pipe"fish` (?), n. (Zoˆl.) Any lophobranch fish of the genus Siphostoma, or Syngnathus, and allied genera, having a long and very slender angular body, covered with bony plates. The mouth is small, at the end of a long, tubular snout. The male has a pouch on his belly, in which the incubation of the eggs takes place.

Pipe"lay`er (?), n., or Pipe" lay`er. 1. One who lays conducting pipes in the ground, as for water, gas, etc.

2. (Polit. Cant) A politician who works in secret; -- in this sense, usually written as one word. [U.S.]

Pipe"lay`ing, n., or Pipe" lay`ing. 1. The laying of conducting pipes underground, as for water, gas, etc.

2. (Polit. Cant) The act or method of making combinations for personal advantage secretly or slyly; -- in this sense, usually written as one word. [U.S.]

Pipe"mouth` (?), n. (Zoˆl.) Any fish of the genus Fistularia; -- called also tobacco pipefish. See Fistularia.

||Pi"per (?), n. [L.] See Pepper.

Pip"er (?), n. 1. (Mus.) One who plays on a pipe, or the like, esp. on a bagpipe. "The hereditary piper and his sons." Macaulay.

2. (Zoˆl.) (a) A common European gurnard (Trigla lyra), having a large head, with prominent nasal projection, and with large, sharp, opercular spines. (b) A sea urchin (Goniocidaris hystrix) having very long spines, native of both the American and European coasts.

To pay the piper, to bear the cost, expense, or trouble.

Pip`er*a"ceous (?), a. [L. piper pepper.] (Bot.) Of or pertaining to the order of plants (PiperaceÊ) of which the pepper (Piper nigrum) is the type. There are about a dozen genera and a thousand species, mostly tropical plants with pungent and aromatic qualities.

Pi*per"ic (p*pr"k), a. (Chem.) Pertaining to, or derived from, or designating, a complex organic acid found in the products of different members of the Pepper family, and extracted as a yellowish crystalline substance.

Pip"er*idge (?), n. (Bot.) Same as Pepperidge.

Pi*per"i*dine (?), n. (Chem.) An oily liquid alkaloid, C5H11N, having a hot, peppery, ammoniacal odor. It is related to pyridine, and is obtained by the decomposition of piperine.

Pip"er*ine (?), n. [L. piper pepper: cf. F. piperin, piperine.] (Chem.) A white crystalline compound of piperidine and piperic acid. It is obtained from the black pepper (Piper nigrum) and other species.

Pip`er*o"nal (?), n. (Chem.) A white crystalline substance obtained by oxidation of piperic acid, and regarded as a complex aldehyde.

Pi*per"y*lene (?), n. [Piperidine + acetylene.] (Chem.) A hydrocarbon obtained by decomposition of certain piperidine derivatives.

Pipe"stem` (?), n. The hollow stem or tube of a pipe used for smoking tobacco, etc.

Took a long reed for a pipestem.

Longfellow.

Pipe"stone` (?), n. A kind of clay slate, carved by the Indians into tobacco pipes. Cf. Catlinite.