Four sporting events, one after the other, at a single venue. / Four sporting events, one after the other, broadcast on the same television channel.

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.

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

plural of quad suit

(metaphysics) The subjective experience of surviving quantum suicide, as a result of the observer surviving such a deadly experiment.

plural of quantum tomography

(baseball) A start in which a pitcher pitches for at least six full innings and allows three or fewer earned runs.

plural of quality start

(marketing, finance) A type of incentive offered to a purchaser which results in a decreased cost of goods or materials per unit when purchased in greater numbers.

plural of quantity discount