exchequer Look up exchequer at Dictionary.com
c.1300, from Anglo-Fr. escheker "a chessboard," from M.L. scaccarium (see check). Its government financial sense began under the Norman kings of England and refers to a cloth divided in squares that covered a table on which accounts of revenue were reckoned with counters. Respelled with an -x- based on the mistaken belief that it was originally a L. ex- word.