quad

1. A quadrangle (quadrangular courtyard). (informal)
2. A horse, from colloquial or humorous quadruped specifically for horse. (colloquial, dated)
3. A poster advertising a cinematic film release, measuring forty by thirty inches, four times the area of crown paper.
4. A quadruple, a jump with four revolutions in the air.
5. A serving of four shots of espresso; (attributive) containing four shots of espresso.
6. A skate with four wheels.
7. A group of four insulated wires twisted together to form two circuits of two wires each.
8. A quad antenna, a directional radio antenna consisting of multiple loop antennas.

الجمع quads