'Squeaker' definitions:

Definition of 'squeaker'

From: WordNet
noun
Any artifact that makes a squeaking sound when used; "those sneakers are squeakers"; "which hinge is the squeaker?"
noun
Something achieved (or escaped) by a narrow margin [syn: close call, close shave, squeak, squeaker, narrow escape]

Definition of 'Squeaker'

From: GCIDE
  • 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]