Source : Webster's Revised Unabridged Dictionary (1913)

Pip \Pip\, n. [Formerly pippin, pepin. Cf. {Pippin}.] (Bot.)
   A seed, as of an apple or orange.

Pip \Pip\, n. [Perh. for pick, F. pique a spade at cards, a
   pike. Cf. {Pique}.]
   One of the conventional figures or ``spots'' on playing
   cards, dominoes, etc. --Addison.

Pip \Pip\, v. i. [imp. & p. p. {Pipped}; p. pr. & vb. n.
   {Pipping}.] [See {Peep}.]
   To cry or chirp, as a chicken; to peep.

         To hear the chick pip and cry in the egg. --Boyle.

Pip \Pip\, n. [OE. pippe, D. pip, or F. p['e]pie; from LL.
   pipita, fr. L. pituita slime, phlegm, rheum, in fowls, the
   pip. Cf. {Pituite}.]
   A contagious disease of fowls, characterized by hoarseness,
   discharge from the nostrils and eyes, and an accumulation of
   mucus in the mouth, forming a ``scale'' on the tongue. By
   some the term pip is restricted to this last symptom, the
   disease being called roup by them.

Source : WordNet®

pip
     n 1: a disease of poultry
     2: a minor nonspecific ailment
     3: a small hard seed found in some fruits
     4: a mark on a playing card (shape depending on the suit) [syn:
         {spot}]
     5: a radar echo displayed so as to show the position of a
        reflecting surface [syn: {blip}, {radar target}]
     [also: {pipping}, {pipped}]

pip
     v 1: kill by firing a missile [syn: {shoot}]
     2: hit with a missile from a weapon [syn: {shoot}, {hit}]
     3: defeat thoroughly; "He mopped up the floor with his
        opponents" [syn: {worst}, {mop up}, {whip}, {rack up}]
     [also: {pipping}, {pipped}]

Source : Free On-Line Dictionary of Computing

PIP
     
         Peripheral Interchange Program.
     
        A program on {CP/M}, {RSX-11}, {RSTS/E}, {TOPS-10}, and {OS/8}
        (derived from a utility on the {PDP-6}) that was used for file
        copying (and in OS/8 and RT-11 for just about every other file
        operation you might want to do).  It is said that when the
        program was written, during the development of the PDP-6 in
        1963, it was called ATLATL ("Anything, Lord, to Anything,
        Lord"; this played on the Nahuatl word "atlatl" for a
        spear-thrower, with connotations of utility and primitivity
        that were no doubt quite intentional).
     
        See also {BLT}, {dd}, {cat}.
     
        [{Jargon File}]
     
        (1995-03-28)