Crossword clues for the word: MILLSTREAM The word MILLSTREAM has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for MILLSTREAM Showing 1 to 5 of 5 results Clue(s) Grain grinder's power source Water that is a power source Water wheel's turner Waterway in a song. Waterwheel's power source