The term 'HUMAN FORELIMB' is used to describe the upper limb of the HUMAN body, commonly referred to as the ARM. This term is made up of two words, 'HUMAN' and 'FORELIMB', with the solution to the crossword being 'ARM' (3 letters). The ARM is composed of three main sections: the humerus, ulna, and radius. It is responsible for a variety of movements, including flexion, extension, abduction, adduction, and rotation. The ARM is also home to many muscles, tendons, and ligaments that allow it to perform its various functions.