Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym ORRR is...

ORRR is

  • Ontario & Rainy River Railway

ORRR is also in:

Acronym Definition Searched: AVC YDO 54353 ALN FCD AVL GCSC NMH PACI GP FRF DH eWz WYP CUSP