The Collaborative International Dictionary of English v.0.48:

Squeaker \Squeak"er\ (-[~e]r), n.
   1. One who, or that which, squeaks.
      [1913 Webster]

   2. (Zool.) The Australian gray crow shrike (Strepera
      anaphonesis); -- so called from its note.
      [1913 Webster]

   3.
      (a) A contest won by a small margin.
      (b) A narrow escape from harm. [Colloq.]
          [PJC]