Meaning of R in English

R

abbr. (also R.) 1 Regina (Elizabeth R). 2 Rex. 3 River. 4 (also °) registered as a trademark. 5 (in names of societies etc.) Royal. 6 Chess rook. 7 Railway. 8 rand. 9 Regiment. 10 Réaumur. 11 radius. 12 roentgen.

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.