throw a thumber

Another type of throw in ultimate frisbee is called the thumber. It’s called a thumber because the disc is held between the thumb and the rest of the fingers and the spin on the disc is generated when you throw the disc off your thumb. As you can see by the grip in Main Thumber Grip, the thumb goes along the inside of the rim. There are variations on where the fingers go as shown in Squanto Grip and Split Finger Grip.