Crossword clues for the word: FLOO The word FLOO has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for FLOO Showing 1 to 3 of 3 results Clue(s) ___ powder (traveling substance for Harry Potter) "___ Network (powder-based transportation option in the ""Harry Potter"" series)" Powder that allows wizards to teleport