(mathematics, linear algebra) Initialism of row echelon form.

(UK, education) Initialism of Research Excellence Framework: a system for assessing the quality of research in higher-education institutions.

(informal) Clipping of referee. / Abbreviation of reference. / Abbreviation of refectory.

(informal, transitive, intransitive) To referee; to act as a referee in a sport or game.

(Philippines, informal) refrigerator.

(law) Abbreviation of refining. / (law) Abbreviation of referee. (title)

A surname.

(British police slang) A scheduled meal break during a shift, short for refreshments.

plural of ref

Third-person singular simple present indicative form of ref