Source : Webster's Revised Unabridged Dictionary (1913)

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.

         The creaking locusts with my voice conspire. --Dryden.

         Doors upon their hinges creaked.         --Tennyson.

Creak \Creak\, v. t.
   To produce a creaking sound with.

         Creaking my shoes on the plain masonry.  --Shak.

Creak \Creak\ (kr[=e]k), n.
   The sound produced by anything that creaks; a creaking.
   --Roget.

Source : WordNet®

creak
     n : a squeaking sound; "the creak of the floorboards gave him
         away" [syn: {creaking}]
     v : make a high-pitched, screeching noise; "The door creaked
         when I opened it slowly" [syn: {squeak}, {screech}, {screak},
          {skreak}]