Definitions of hip:

• noun:   either side of the body below the waist and above the thigh
• noun:   the ball-and-socket joint between the head of the femur and the acetabulum
• noun:   the fruit of a rose plant
• noun:   the structure of the vertebrate skeleton supporting the lower limbs in humans and the hind limbs or corresponding parts in other vertebrates
• adjective:   informed about the latest trends