(baseball) The sign made by the manager directing the pitcher to issue an intentional walk.

A horse-drawn hackney cab with four wheels, as opposed to a hansom or dogcart. / Any vehicle with four wheels.

measuring two inches by four inches / (by extension) small or cramped

(construction) A length of lumber having a cross section of two inches by four inches, or in the case of dimensional lumber three and a half inches by one and a half inches.

(informal) The Beatles.

plural of two-four

(slang, Canada, US) A lowly, disreputable cheat or fraudster, especially at cards, especially a dull or unimaginative one.

(motor vehicles) A four-speed manual transmission whose gearshift lever is mounted beside the driver on the floor of the vehicle.

Alternative form of fourball (“golf format”)

(informal, humorous, figuratively) A notional weapon used to knock sense into the clueless.