Crossword clues for the word: TRUNKLINE The word TRUNKLINE has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for TRUNKLINE Showing 1 to 7 of 7 results Clue(s) "Railroad artery, e.g." Connection between switchboards It's not a side road Main communication channel Main railway route Phones in Fords? Switchboard connection