The Collaborative International Dictionary of English v.0.48:

Chark \Chark\, n. [Abbrev. fr. charcoal.]
   Charcoal; a cinder. [Obs.] --DeFoe.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chark \Chark\, v. t. [imp. & p. p. Charked.]
   To burn to a coal; to char. [Obs.]
   [1913 Webster]