Crossword clues for the word: BIGRIG The word BIGRIG has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for BIGRIG Showing 1 to 7 of 7 results Clue(s) "Slang, a heavy highway hauler (3)" Interstate rumbler Many a semi Oversized semi Rhyming term for an 18-wheeler: 2 wds. Semi Truck-stop stopper