Source : Webster's Revised Unabridged Dictionary (1913)

Squeaker \Squeak"er\, n.
   1. One who, or that which, squeaks.

   2. (Zo["o]l.) The Australian gray crow shrile ({Strepera
      anaphonesis}); -- so called from its note.

Source : WordNet®

squeaker
     n 1: any artifact that makes a squeaking sound when used; "those
          sneakers are squeakers"; "which hinge is the squeaker?"
     2: something achieved (or escaped) by a narrow margin [syn: {close
        call}, {close shave}, {squeak}, {narrow escape}]