1. [n]  something achieved (or escaped) by a narrow margin
2. [n]  a short high-pitched noise; "the squeak of of shoes on powdery snow"
3. [v]  make a high-pitched, screeching noise, as of a door

1. \Squeak\, v. i. [imp.& p. p. {Squaked}; p. pr. & vb. n.
   {Squeaking}.] [Probably of imitative origin; cf. Sw.
   sqv["a]ka to croak, Icel. skvakka to give a sound as of water
   shaken in a bottle.]
   1. To utter a sharp, shrill cry, usually of short duration;
      to cry with an acute tone, as an animal; or, to make a
      sharp, disagreeable noise, as a pipe or quill, a wagon
      wheel, a door; to creak.
            Who can endure to hear one of the rough old Romans
            squeaking through the mouth of an eunuch? --Addison.
            Zoilus calls the companions of Ulysses the
            ``squeaking pigs'' of Homer.          --Pope.
   2. To break silence or secrecy for fear of pain or
      punishment; to speak; to confess. [Colloq.]
      If he be obstinate, put a civil question to him upon the
      rack, and he squeaks, I warrant him.        --Dryden.
   

2. \Squeak\, n.
   A sharp, shrill, disagreeable sound suddenly utered, either
   of the human voice or of any animal or instrument, such as is
   made by carriage wheels when dry, by the soles of leather
   shoes, or by a pipe or reed.
   

1.

["Squeak: A Language for Communicating with Mice", L. Cardelli et al, Comp Graphics 19(3):199-204, July 1985].

See Newsqueak.

2. A Smalltalk implementation and a media authoring tool by members of the original Xerox PARC team which created Smalltalk (Alan Kay, Dan Ingalls, et al). Squeak is an open-source implementation, with a highly portable virtual machine implemented in a subset of Smalltalk (translated into C and compiled by a C compiler of the target platform).

Squeak Home.

SqueakCentral.