knuckled

/N AH1 K AH0 L D/
verb
  1. 1

    To apply pressure, or rub or massage with one's knuckles.

    โ€œHe knuckled the sleep from his eyes.โ€

  2. 2

    To bend the fingers.

  3. 3

    To touch one's forehead as a mark of respect.

  4. 4

    To yield.

adjective
  1. 1

    (chiefly in combination) Having a certain type of knuckles.

Source: https://en.wiktionary.org/wiki/knuckle, https://en.wiktionary.org/wiki/knuckled