The cardinal number immediately following fifty-two and preceding fifty-four.

The cardinal number immediately following fifty-five and preceding fifty-seven.

The cardinal number immediately following fifty-one and preceding fifty-three.

The cardinal number immediately following fifty and preceding fifty-two.

The cardinal number immediately following fifty-six and preceding fifty-eight.

The cardinal number immediately following fifty-four and preceding fifty-six.

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

(chiefly US, informal, with the) The Fifth Amendment. / (chiefly US, informal, with the, by extension) The right not to give self-incriminating testimony. / (chiefly US) Fifth Avenue.

(road transport) A type of trailer hitch, which consists of a horseshoe-shaped plate on a multidirectional pivot, with a locking pin to couple with the kingpin of a truck trailer.

(databases) A stage in the normalization of a relational database in which a database is in fourth normal form and every join dependency is implied by the candidate keys.