Artificial intelligent assistant

knuckle-dust

ˈknuckle-dust, v.
  [Back-formation from knuckle-duster.]
  trans. To strike with a knuckle-duster. So ˈknuckle-dusting vbl. n.

1909 Daily Chron. 29 Dec. 1/7 One boy..got the robber's head under his arm and gave it a knuckle-dusting. 1962 V. Nabokov Pale Fire 151 The brief affray during which two of the attackers were knuckledusted and knocked out by the brave Lorrainer.

Oxford English Dictionary

yu7NTAkq2jTfdvEzudIdQgChiKuccveC fcd6d5e887fd20ad014bf469a8ad1dbf