Crossword clues for the word: NAILSDOWN The word NAILSDOWN has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for NAILSDOWN Showing 1 to 8 of 8 results Clue(s) Clinches: 2 wds. Establishes clearly. Fastens firmly Fastens securely. Finally settles trouble between North and South Irish region Makes secure from wind (also building at back of garden) Reform in southern law don defines exactly Settles once and for all