Shut up, and hold your row, unless you want to be chucked out of the Quad.
I bolted lunch with Pellams at his house and came back to the Quad.
"The men are making a terrible riot in quad," he said, answering the other's remark.
A 2-em quad is two "ems" in width, and a 3-em quad three "ems" in width.
He lounged around the quad till the doors of the hall were opened.