n. [ AS. pīpe, probably fr. L. pipare, pipire, to chirp; of imitative origin. Cf. Peep, Pibroch, Fife. ] 1. A wind instrument of music, consisting of a tube or tubes of straw, reed, wood, or metal; any tube which produces musical sounds; as, a shepherd's pipe; the pipe of an organ. “Tunable as sylvan pipe.” Milton. [ 1913 Webster ]

Now had he rather hear the tabor and the pipe. Shak. [ 1913 Webster ]

2. Any long tube or hollow body of wood, metal, earthenware, or the like: especially, one used as a conductor of water, steam, gas, etc. [ 1913 Webster ]

3. A small bowl with a hollow stem, -- used in smoking tobacco, and, sometimes, other substances. [ 1913 Webster ]

4. A passageway for the air in speaking and breathing; the windpipe, or one of its divisions. [ 1913 Webster ]

5. The key or sound of the voice. [ R. ] Shak. [ 1913 Webster ]

6. The peeping whistle, call, or note of a bird. [ 1913 Webster ]

The earliest pipe of half-awakened birds. Tennyson. [ 1913 Webster ]

7. pl. The bagpipe; as, the pipes of Lucknow. [ 1913 Webster ]

8. (Mining) An elongated body or vein of ore. [ 1913 Webster ]

9. A roll formerly used in the English exchequer, otherwise called the Great Roll, on which were taken down the accounts of debts to the king; -- so called because put together like a pipe. Mozley & W. [ 1913 Webster ]

10. (Naut.) A boatswain's whistle, used to call the crew to their duties; also, the sound of it. [ 1913 Webster ]

11. [ Cf. F. pipe, fr. pipe a wind instrument, a tube, fr. L. pipare to chirp. See Etymol. above. ] A cask usually containing two hogsheads, or 126 wine gallons; also, the quantity which it contains. [ 1913 Webster ]

Pipe fitter, one who fits pipes together, or applies pipes, as to an engine or a building. --
Pipe fitting, a piece, as a coupling, an elbow, a valve, etc., used for connecting lengths of pipe or as accessory to a pipe. --
Pipe office, an ancient office in the Court of Exchequer, in which the clerk of the pipe made out leases of crown lands, accounts of cheriffs, etc. [ Eng. ] --
Pipe tree (Bot.), the lilac and the mock orange; -- so called because their were formerly used to make pipe stems; -- called also pipe privet. --
Pipe wrench, or
Pipe tongs, a jawed tool for gripping a pipe, in turning or holding it. --
To smoke the pipe of peace, to smoke from the same pipe in token of amity or preparatory to making a treaty of peace, -- a custom of the American Indians. [ 1913 Webster ]

v. i. 1. To play on a pipe, fife, flute, or other tubular wind instrument of music. [ 1913 Webster ]

We have piped unto you, and ye have not danced. Matt. xi. 17. [ 1913 Webster ]

2. (Naut.) To call, convey orders, etc., by means of signals on a pipe or whistle carried by a boatswain. [ 1913 Webster ]

3. To emit or have a shrill sound like that of a pipe; to whistle. “Oft in the piping shrouds.” Wordsworth. [ 1913 Webster ]

4. (Metal.) To become hollow in the process of solodifying; -- said of an ingot, as of steel. [ 1913 Webster ]

v. t. [ imp. & p. p. Piped p. pr. & vb. n. Piping. ] 1. To perform, as a tune, by playing on a pipe, flute, fife, etc.; to utter in the shrill tone of a pipe. [ 1913 Webster ]

A robin . . . was piping a few querulous notes. W. Irving. [ 1913 Webster ]

2. (Naut.) To call or direct, as a crew, by the boatswain's whistle. [ 1913 Webster ]

As fine a ship's company as was ever piped aloft. Marryat. [ 1913 Webster ]

3. To furnish or equip with pipes; as, to pipe an engine, or a building. [ 1913 Webster ]

v. t. 1. To whiten or clean with pipe clay, as a soldier's accouterments. [ 1913 Webster ]

2. To clear off; as, to pipeclay accounts. [ Slang, Eng. ] [ 1913 Webster ]

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. [ 1913 Webster ]

a. Formed with a pipe; having pipe or pipes; tubular. [ 1913 Webster ]

n. (Zool.) 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. [ 1913 Webster ]

n., or . 1. One who lays conducting pipes in the ground, as for water, gas, etc. [ 1913 Webster ]

2. (Polit. Cant) A politician who works in secret; -- in this sense, usually written as one word. [ U.S. ] [ 1913 Webster ]

n., or . 1. The laying of conducting pipes underground, as for water, gas, etc. [ 1913 Webster ]

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. ] [ 1913 Webster ]

. 1. A line of pipe with pumping machinery and apparatus for conveying liquids, gases, or finely divided solids, such as petroleum or natural gas, between distant points. [ Webster 1913 Suppl. +PJC ]

2. fig. an information channel direct from the source. [ PJC ]

3. the set of stages and processes from the invention or design of a product to its ultimate use, production, or commercial sale. Used commonly in the phrase
in the pipeline, i. e. still in preparation or under development. [ PJC ]