Keyway is a term that describes a slot or groove that is typically cut into a piece of machinery or equipment. It is the area where a key is inserted to hold two objects together. Synonyms for the word keyway include notch, groove, channel, slot, hole, opening, and cavity. These terms are often used interchangeably to describe the same function and can easily be substituted in any relevant context. Keyways are a crucial part of many mechanical systems and are essential for ensuring that equipment runs smoothly and efficiently. Understanding the various synonyms for keyway can aid in stronger communication when describing the inner workings of machinery.