Meaning

noun the part of the body between the neck and the upper arm

noun a cut of meat including the upper joint of the foreleg

noun a ball-and-socket joint between the head of the humerus and a cavity of the scapula

originFrom Middle English schuldre, sholder, shulder, schulder, from Old English sċuldra, sċuldor (“shoulder”), from Proto-West Germanic *skuldru (“shoulder”), of uncertain origin. Perhaps related to Proto-Germanic *skelduz (“shield”), see shield. Cognate with Old Frisian skuldere (“shoulder”) (West Frisian skouder (“shoulder”)), Middle Low German scholder (“shoulder”), Low German Schuller, Schulder…

Etymology from Wiktionary, CC BY-SA 3.0