(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

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

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

Abbreviation of rabbi.

(accounting) Initialism of accounts receivable.

Alternative form of A & R

Alternative form of A & R

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.

(abbreviation, slang, text messaging, Internet) are (in text messaging and internet conversations)