A chequered cloth resembling a chess-board which covered the table , in the exchequer, and on which, when, certain of the king's accounts were mnde up, the sums were marked and scored with coun-ters. Hence the court of exchequer, or curia seaccarii, derived its name. 3 Bl. Comm. 44
Source: Black's Law Dictionary 2nd Ed (1910)
