The term QUILL TIP is composed of two words, the first being 'QUILL' and the second being 'TIP'. A QUILL is a writing instrument made from a feather, usually a goose or swan feather, that was used for centuries before the invention of the modern pen. The TIP of the QUILL is the part that is used to write with. The crossword solution for this term is NIB, which is the metal point at the end of a fountain pen or other writing instrument.