Source : Webster's Revised Unabridged Dictionary (1913)

Chark \Chark\, n. [Abbrev. fr. charcoal.]
   Charcoal; a cinder. [Obs.] --DeFoe.

Chark \Chark\, v. t. [imp. & p. p. {Charked}.]
   To burn to a coal; to char. [Obs.]