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)

Reigned.

Abbreviation of rare. / Abbreviation of royal. / Abbreviation of right.

(law) Abbreviation of rule.

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

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

plural of r

plural of R

(accounting) Initialism of accounts receivable.