Crossword clues for the word: RLO The word RLO has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for RLO Showing 1 to 6 of 6 results Clue(s) Part of the P.O. network Post-office unit: Abbr. Postal abbreviation. Postal dept. Postal sect. Where some letters go: Abbr.