(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.

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

(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.

(card games) A solitaire card game, having five spaces for cards (the reserve) in the layout of a cross.

plural of four-bagger

Less common spelling of four-fifths

Four of five equal parts (4/5, ⅘, 0.8).

(basketball) A power forward able to shoot three-pointers.