The Pinwheel Block is a simple block, and a very old block. There are many variations and names for this block: Rolling Pinwheel; Betty's Delight; Flutter Wheel; Clover Leaf; Windmill; Broken Wheel; Corn Design; Crow's Foot; Fan Mill; Four Leaf Clover; Fly; Kathy's Ramble; Millwheel; Broken Pinwheel; Turnstile, LAC; Whirligig; Whirlwind; Double Pinwheel; etc.
