The crossword solution for the term DIP FOR A QUILL is INK. 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. It is most commonly used for writing, drawing, and printing. Quills are a type of writing instrument made from a feather that was used before the invention of the modern pen. To use a quill, one must dip it in INK before writing.