(cricket) A four scored by hitting the ball past the boundary (rather than an all-run four)

(historical) A group of four individuals who were wrongly charged with direct involvement in the Guildford pub bombings of 5 October 1974 in Guildford, Surrey, England, with alleged ties to the Provisional Irish Republican Army, an Irish republican terrorist organization.

The rental of cinema or theater under a four-wall arrangement.

(film, theater) A company that rents a cinema or theater under a four-wall arrangement. / (film, television) A studio consisting of buildings but little in the way of equipment.

plural of four-waller

Relating to the rental of a cinema or theater for a fixed fee rather than a portion of the box office revenue.

A hamlet in Wycombe district, Buckinghamshire, England (OS grid ref SU8795). / A village in South Staffordshire district, Staffordshire, England (OS grid ref SJ9108).

(rail transport) Provision of four running lines on a stretch of railway track, usually two in each direction.

(physics) The analogy of electric current density in four-dimensional spacetime

(rail transport) Having four running lines, usually two in each direction.