The Collaborative International Dictionary of English v.0.48:

Creak \Creak\ (kr[=e]k), v. i. [imp. & p. p. Creaked
   (kr[=e]kt); p. pr. & vb. n. Creaking.] [OE. creken, prob.
   of imitative origin; cf. E. crack, and. D. krieken to
   crackle, chirp.]
   To make a prolonged sharp grating or squeaking sound, as by
   the friction of hard substances; as, shoes creak.
   [1913 Webster]

         The creaking locusts with my voice conspire. --Dryden.
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         Doors upon their hinges creaked.         --Tennyson.
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The Collaborative International Dictionary of English v.0.48:

Creaking \Creak"ing\, n.
   A harsh grating or squeaking sound, or the act of making such
   a sound.
   [1913 Webster]

         Start not at the creaking of the door.   --Longfellow.
   [1913 Webster]

WordNet (r) 3.0 (2006):

creaking
    n 1: a squeaking sound; "the creak of the floorboards gave him
         away" [syn: creak, creaking]