Source : Webster's Revised Unabridged Dictionary (1913)

Chirk \Chirk\, v. t.
   To cheer; to enliven; as, to chirk one up. [Colloq. New Eng.
   ]

Chirk \Chirk\, a. [From {Chirk}, v. i.]
   Lively; cheerful; in good spirits. [Colloq. New Eng.]

Chirk \Chirk\, v. i. [Cf. {Chirp}, also {Creak}.]
   1. To shriek; to gnash; to utter harsh or shrill cries.
      [Obs.]

            All full of chirkyng was that sorry place.
                                                  --Cheucer.

   2. To chirp like a bird. [Obs.] --Chaucer.

Source : WordNet®

chirk
     v : make a shrill creaking, squeaking, or noise, as of a door,
         mouse, or bird