The term JUMPSUIT PART is composed of three parts: KNEE (4 letters), SHIRT (5 letters), and ARM (3 letters). The KNEE is a part of the leg, located between the thigh and the calf. The SHIRT is a type of clothing that covers the upper body and arms. The ARM is a part of the body extending from the shoulder to the hand. All three of these parts are components of a jumpsuit, which is a one-piece garment that covers the entire body.