411 REFERENCE · Wiktionary
R.R.
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
rr RR R-R R&R
English
Noun
?
en RR.
Usage notes
This is the customary abbreviation for en railroad as used in American case citations. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Case Names and Institutional Authors in Citations", Table T6, p. 430431.
en case citation abbreviations
en Law
Latin
Adjective
la adjective
la RR