Source : Webster's Revised Unabridged Dictionary (1913)

Chequer \Cheq"uer\, n. & v.
   Same as {Checker}.

Source : WordNet®

chequer
     v 1: mark into squares or draw squares on; draw crossed lines on
          [syn: {check}, {checker}]
     2: variegate with different colors, shades, or patterns [syn: {checker}]