Crossword clues for the word: LINCHPIN The word LINCHPIN has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for LINCHPIN Showing 1 to 6 of 6 results Clue(s) Axle insert Critical element Critical structural piece Crucial unifying element Essential person or thing Trim bar near church is, of course, a target for the swingers and that's vital to any organisation