Meaning

noun a gesture involving the shoulders

verb raise one's shoulders to indicate indifference or resignation

originFrom Middle English schruggen, shrukken, probably of North Germanic origin related to Danish skrugge, skrukke (“to stoop; crouch”), Swedish skruga, skrukka (“to huddle; crouch”), all from or related to Old Norse skrykkva, from Proto-Germanic *skrinkwaną. Compare also Old English scrincan (“to shrink”). More at shrink.

Etymology from Wiktionary, CC BY-SA 3.0