The term WRITING TIP can be broken down into three crossword solutions: NIB (3 letters), PENNIB (6 letters), and PEN (3 letters). NIB is an abbreviation for 'Nibs, ' which are the metal points of a PEN or pencil. PENNIB is an abbreviation for 'PEN NIB, ' which is a type of NIB that is shaped like a PEN. Finally, PEN is an abbreviation for 'PEN, ' which is a writing instrument used to apply ink to paper. All three of these solutions are related to writing tips, as they all refer to tools used for writing.