Definition
A misnomer is a wrong or inaccurate name or designation. It's a term that doesn't quite fit what it's supposed to describe. Think of it as a labeling fail, where the name is misleading or inappropriate. Unlike a lie, a misnomer is usually unintentional, just a bad choice of words. It can be humorous or confusing, depending on the context. It suggests a disconnect between the name and the actual thing.