(law) Abbreviation of rule.

Abbreviation of Regina (“the queen”). / Abbreviation of Rex (“the king”). / Abbreviation of Rabbi.

The eighteenth letter of the English alphabet, called ar and written in the Latin script.

The ordinal number eighteenth, derived from this letter of the English alphabet, called ar and written in the Latin script.

(entomology) radius / (US, politics) Republican / (monarchy) rex (“king”) or regina (“queen”); the initial by which a British monarch signs documents after his or her name / (handbells) ring

(film certification) restricted / reverse / right (as opposed to left)

(music) Initialism of artist(s) and repertoire/repertory.

plural of r

plural of R

(accounting) Initialism of accounts receivable.