n. A blank metal block used to fill short lines of type.n. A joke used to fill long days of setting type.n. A keyboard command which aligns text with the left or right margin, or centred between them. In combination, as quad left, quad right, or quad centre.v. To fill spaces in a line of type with quads. Also quad out.v. To align text with the left or right margin, or centre it.n. A quadrangle (courtyard).n. A quadruplet (infant).n. short for quadrilateraln. A quadriceps muscle.n. Four shots of espresso.n. A quad bike.adj. Having four shots of espresso.adj. Of or relating to quads.