plural of four-seamer

A large four-masted sailboat.

(automotive, engineering) Having four wheels.

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

Having four legs.

An animal that walks on four legs. / An intersection where two roads cross.

(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.

The cardinal number immediately following twenty-three and preceding twenty-five.

(US, slang) To win something four times consecutively.