The word "whirs" is commonly used to describe a sound made by machinery or a spinning object. There are several other synonyms that you can use to describe the same sound in different ways. For instance, the word "buzzes" is often used to describe a similar sound, as well as "hums," "drones," and "whizzes." Similarly, the word "rattles" can be used to describe a type of whirring sound, or "clicks," "clacks," and "chatters." These synonyms can add variety to your writing, making it more interesting and engaging for your readers. So, the next time you need to describe a sound similar to a whirring noise, consider using one of these synonyms instead.