back of one's hand, to give (someone) the

back of one's hand, to give (someone) the

To show contempt, to insult. “Here’s the back of my hand to you,” wrote Jonathan Swift (1738), perhaps signifying a challenging farewell. The back of the hand, of course, consists of knuckles, so the expression may once have meant a punch. Similarly, a backhanded compliment is actually malicious in intent.
See also: back, give, of
The Dictionary of Clichés by Christine Ammer
See also:
  • (with) hat in hand
  • come back and see us
  • back
  • back at (something or some place)
  • echo back to
  • be/go back to square one
  • a while back
  • back door
  • back to square one
  • be back on the rails