A form of roller hockey played on four-wheeled roller skates.

(Internet) An IPv4 address in the form of four numbers separated by dots, such as 127.0.0.1.

quadrille paper

(fandom slang) A type of fursuit for walking on all fours.

plural of quad suit

A region of cities (originally four) in the U.S. states of Iowa and Illinois: Davenport and Bettendorf in southeastern Iowa, and Rock Island, Moline and East Moline in northwestern Illinois.

Alternative form of quadcore

A small off-road four-wheeled powered vehicle, especially of a design derived from a motorcycle, usually used for recreation or farm work.

plural of quad skate

en quad