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Wiktionary
r'n'r

abbr. 1 (context slang English) rock and roll 2 (context military English) rest and recuperation alt. 1 (context slang English) rock and roll 2 (context military English) rest and recuperation

Wikipedia
R'n'r

R'n'r may refer to:

  • R&R, military abbreviation for rest and recuperation
  • Rock and roll, a genre of popular music