Word for to look at someone telling them to shut up

Solution 1:

There's quell:

  1. Put an end to (a rebellion or other disorder), typically by the use of force. "extra police were called to quell the disturbance"
    • subdue or silence (someone).
      "Connor quelled him with a look"

It's often used in this context - you would give someone a 'quelling look' which would be the kind that silently tells them to stop what they are doing.