1. [n]  the flues and stops on a pipe organ
2. [n]  a long tube made of metal or plastic that is used to carry water or oil or gas etc.
3. [n]  a tube with a small bowl at one end; used for smoking tobacco
4. [n]  a tubular wind instrument
5. [n]  a hollow cylindrical shape
6. [v]  utter a shrill cry
7. [v]  trim with piping, as of garments
8. [v]  play on a pipe; "pipe a tune"
9. [v]  transport by pipeline; of oil, water, gas, etc.

1. \Pipe\, n. [AS. p[=i]pe, 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.
   
            Now had he rather hear the tabor and the pipe.
                                                  --Shak.
   
   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.
   
   3. A small bowl with a hollow steam, -- used in smoking
      tobacco, and, sometimes, other substances.
   
   4. A passageway for the air in speaking and breathing; the
      windpipe, or one of its divisions.
   
   5. The key or sound of the voice. [R.] --Shak.
   
   6. The peeping whistle, call, or note of a bird.
   
            The earliest pipe of half-awakened birds.
                                                  --Tennyson.
   
   7. pl. The bagpipe; as, the pipes of Lucknow.
   
   8. (Mining) An elongated body or vein of ore.
   
   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.
   
   10. (Naut.) A boatswain's whistle, used to call the crew to
       their duties; also, the sound of it.
   
   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.
   
   {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 {Pipetongs}, 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.
   
   

2. \Pipe\, v. i.
   1. To play on a pipe, fife, flute, or other tubular wind
      instrument of music.
   
            We have piped unto you, and ye have not danced.
                                                  --Matt. xi.
                                                  17.
   
   2. (Naut.) To call, convey orders, etc., by means of signals
      on a pipe or whistle carried by a boatswain.
   
   3. To emit or have a shrill sound like that of a pipe; to
      whistle. ``Oft in the piping shrouds.'' --Wordsworth.
   
   4. (Metal.) To become hollow in the process of solodifying;
      -- said of an ingot, as of steel.
   
   

3. \Pipe\, 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.
   
            A robin . . . was piping a few querulous notes. --W.
                                                  Irving.
   
   2. (Naut.) To call or direct, as a crew, by the boatswain's
      whistle.
   
            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.
   
   

1. One of unix's buffers which can be written to by one asynchronous process and read by another, with the kernel suspending and waking up the sender and receiver according to how full the pipe is. In later versions of Unix, rather than using an anonymous kernel-managed temporary file to implement a pipe, it can be named and is implemented as a local socket pair.

2. "|" ascii character 124. Used to represent a pipe between two processes in a shell command line. E.g.

        grep foo log | more

which feeds the output of grep into the input of more without requiring a named temporary file and without waiting for the first process to finish.

3. A connection to a network.

See also light pipe.

(1 Sam. 10:5; 1 Kings 1:40; Isa. 5:12; 30:29). The Hebrew word halil, so rendered, means "bored through," and is the name given to various kinds of wind instruments, as the fife, flute, Pan-pipes, etc. In Amos 6:5 this word is rendered "instrument of music." This instrument is mentioned also in the New Testament (Matt. 11:17; 1 Cor. 14:7). It is still used in Palestine, and is, as in ancient times, made of different materials, as reed, copper, bronze, etc.