(automotive, engineering) Having four wheels.

A small cake generally eaten at the end of a meal or served as part of a large buffet.

plural of four by two

(card games) Four cards of the same rank.

(poker slang) four of a kind, aces.

(mathematics) A vector in four-dimensional vector space, especially one having three spatial dimensions and one temporal dimension.

plural of four-seamer

(basketball, US, informal) The four regional champions of the NCAA Division I tournament, one of whom will become the national champion.

(algebraic geometry) Having four dimensions; being measurable along four mutually perpendicular axes.

Having four legs.