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)

Alternative form of R&R

(slang) Initialism of rock and roll. / (originally military) Initialism of rest and recuperation/recreation/relaxation.

(education) Initialism of revise and resubmit. / (fandom slang) Initialism of read and review: used to request that people read a work (generally fan fiction) and give feedback.

Initialism of Rolls-Royce.

Initialism of Rolls-Royce.

Reigned.

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