Crossword clues for the word: TREENAIL The word TREENAIL has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for TREENAIL Showing 1 to 6 of 6 results Clue(s) "Wooden peg, used in shipbuilding." Ship timber peg Ship's timber fastener Shipbuilder's pin Shipbuilding dowel Wooden pin on a wooden ship.