Crossword clues for the word: MATRASS The word MATRASS has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for MATRASS Showing 1 to 4 of 4 results Clue(s) "Distiller's glass vessel, once" Distilling flask Glass flask for distilling. Glass tube for blowpipe tests.