Source : Webster's Revised Unabridged Dictionary (1913)

Chirm \Chirm\, n. [AS. cirm, cyrm.]
   Noise; din; esp.; confused noise, clamor, or hum of many
   voices, notes of birds, or the like.

Churme \Churme\, Chirm \Chirm\, n. [See {Chirm}.]
   Clamor, or confused noise; buzzing. [Obs.]

         The churme of a thousand taunts and reproaches.
                                                  --Bacon.

Chirm \Chirm\, v. i. [Cf. AS. cyrman, cirman, to cry out.
   [root]24 Cf. {Chirp}.]
   To chirp or to make a mournful cry, as a bird. [Obs.]
   --Huloet.