Okay kiddo, you know when you use a computer and see some cool graphics like colors, shapes or text that move around? These are called "GUI" or "Graphical User Interface". But sometimes, people want to create programs that run without a GUI, that means, with only text and letters on the screen.
The programming library called "curses", helps programmers create these kinds of programs. And it's not related to saying bad words (curses)!
With curses, you can create games, command-line interfaces, and other programs that use text to show information and interact with users. You can move the text around, change its color, make it blink, hide it or show it, and much more.
It's like playing with letter blocks: you can create different shapes, put them in different places, and make them do different things.
So, curses is like a special toolbox for programmers that want to create text-based programs, and it helps them make their programs look nice and fun.