Definition of shoulder:
the part of the body between the neck and the upper arm
a cut of meat including the upper joint of the foreleg
a ball-and-socket joint between the head of the humerus and a cavity of the scapula
the part of a garment that covers or fits over the shoulder; "an ornamental gold braid on the shoulder of his uniform"
a narrow edge of land (usually unpaved) along the side of a road; "the car pulled off onto the shoulder"
lift onto one's shoulders
push with the shoulders; "He shouldered his way into the crowd"
carry a burden, either real or metaphoric; "shoulder the burden"