Crossword clues for the word: FILAMENT The word FILAMENT has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for FILAMENT Showing 1 to 9 of 9 results Clue(s) Fibre Light bulb part Light bulb thread Metal wire in a light bulb Part of a light bulb. Part of an incandescent bulb The Wire: appropriate to include US city blokes Very fine wire. Wire one on limping nag initially into this paper