BIC FILLER is a term used to describe a variety of writing instruments. The crossword solutions for this term include INK (3 letters), PENS (4 letters), PEN (3 letters), STIC (4 letters), LIT (3 letters), and ZIPPO (5 letters). INK is a liquid or paste that contains pigments or dyes and is used to color a surface to produce an image, text, or design. PENS are writing instruments that use a metal nib or ballpoint to apply INK to paper. PEN is a shortened version of the word 'PENCIL' which is a writing instrument made of graphite encased in wood. STIC is a brand of PEN that uses a water-based INK. LIT is a brand of PEN that uses a gel-based INK. ZIPPO is a brand of lighter that uses a wick and flint wheel to create a spark.