SHRUG, verb intransitive To raise or draw up the shoulders, as in expressing horror or dissatisfaction.
They grin, they shrug,
They bow, they snarl, they scratch, they hug. Swift.
SHRUG, noun A drawing up of the shoulders; a motion usually expressing dislike.
The Spaniards talk in dialogues
Of heads and shoulders, nods and shrugs. Hudibras.