The term 'PART OF 'THE WORKS'' can be solved by two crossword solutions: COG (3 letters) and ONION (5 letters). The term 'THE WORKS' is often used to refer to a full set of features or components that are included in a product or service. COG is an abbreviation for 'component of a gear', which is a part of a machine or device that helps it to move or function. An ONION is a vegetable that is composed of multiple layers, each of which can be considered a part of the whole. Therefore, both COG and ONION can be seen as fitting into the phrase 'PART OF 'THE WORKS''.