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

RRL is

Runway Remaining Lights
Road Research Laboratory

More Meanings For RRL:

Rhizobium Research Laboratory
Road Research Laboratory
Rhizobium Research Laboratory
Road Research Laboratory
Rudder Reference Line
Runway Remaining Lights
Road Research Laboratory
Recommended Reading Library
Rock & Roll Library

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