noun
1. usually capitalized G&C
[so called from the green-covered table at which the board originally carried on its business]
: a board or court of justice of the British sovereign's household that is composed of the lord steward and his officers and has cognizance of matters of justice in the household with power to correct offenders and keep the peace within the palace
2.
a. : a layout for gambling
b. : billiard table