Crossword clues for the word: THIRDRAIL The word THIRDRAIL has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for THIRDRAIL Showing 1 to 9 of 9 results Clue(s) *Supplier of electricity to subway trains Can't touch this Dangerous bar Dangerous subway track It electrifies cars through contact shoes Source of electric current. Subway danger Subway power conductor Train's electricity source