A GAUNTLET is an 8-letter glove with a long sleeve that covers the ARM. It is usually made of leather or metal and is used to protect the hand and forearm from injury. An ARM is a 3-letter word for the upper limb of the human body, extending from the shoulder to the hand. A MITT is a 4-letter glove with a long sleeve that covers the entire hand and wrist. It is typically made of leather or fabric and is used to protect the hand from cold temperatures.