Being called a spitfire is like being called a very energetic and fiery person. It means that someone is describing a girl as being full of energy, passion, and sometimes even a little bit of feistiness. Imagine a blazing fire with lots of crackling energy, that's what it means to be called a spitfire.
For example, if a girl is called a spitfire, it could be because she's always full of energy and enthusiasm. She might be the first one to jump into a game or try a new activity. She might also be very determined and eager to speak her mind, just like a fiery spark in a roaring fire.
Another way to think about it is like a superhero! Just like superheroes have lots of energy and boldness, a girl called a spitfire is like a real-life superhero in her own way. She's brave, strong-willed, and spirited, and she's not afraid to stand up for what she believes in.
So, when someone says a girl is a spitfire, it's because they see her as a lively, spirited, and powerful person. It's a special way of saying that she's one-of-a-kind and full of vibrant energy!