The Collaborative International Dictionary of English v.0.48:

Chirk \Chirk\, v. i. [Cf. Chirp, also Creak.]
   1. To shriek; to gnash; to utter harsh or shrill cries.
      [Obs.]
      [1913 Webster]

            All full of chirkyng was that sorry place.
                                                  --Cheucer.
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   2. To chirp like a bird. [Obs.] --Chaucer.
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The Collaborative International Dictionary of English v.0.48:

Chirk \Chirk\, v. t.
   To cheer; to enliven; as, to chirk one up. [Colloq. New Eng.
   ]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chirk \Chirk\, a. [From Chirk, v. i.]
   Lively; cheerful; in good spirits. [Colloq. New Eng.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

chirk
    v 1: make a shrill creaking, squeaking, or noise, as of a door,
         mouse, or bird