Crossword clues for the word: FORTRESS The word FORTRESS has appeared as an answer to at least 12 crossword clues on different crossword puzzles. Crossword clues for FORTRESS Showing 1 to 12 of 12 results Clue(s) "Sting's ""___ Around Your Heart""" "The Tower of London, for one" Bastion Citadel Citadel's in favor of lock (8) Flying ___ (B-17 bomber) It might keep things safe for hair (8) It's battery-operated Military stronghold Military stronghold in favour of lock Siege site Stronghold