Imagine you have a drawing of a star, with four lines coming out of it that look like they are made of clay. Each line has three little bumps on it, like the bumps you see on a cookie.
This shape is called a cross pattée. It is sometimes used as a symbol, especially by people who follow the Christian religion or are part of a group called the Knights Templar.
The cross pattée is basically a fancy-looking cross with little bumps on the ends of the lines instead of just ending in a point. It is called "pattée" because the bumps make it look a little bit like a paw print or the sole of a foot (in French, "patte" means "paw" or "foot").