Crossword clues for the word: MERRIMAC The word MERRIMAC has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for MERRIMAC Showing 1 to 5 of 5 results Clue(s) Historic warship. Monitor's opponent Only American ship sunk by the Spanish in the Spanish-American War The South's ironclad Warship of 1862