What does the word tweak mean?

Usage examples for tweak

  1. In the meantime, loss of blood, vexation, and want of food, contributed, with the noisome stench of the place, to throw me into a swoon, out of which I was recovered by a tweak of the nose, administered by the tar who stood sentinel over us, who at the same time regaled me with a draught of flip, and comforted me with the hopes of being put on board of the Thunder next day, where I should be freed of my handcuffs, and cured of my wounds by the doctor. – The Adventures of Roderick Random by Tobias Smollett
  2. But when that sport was over, and the winner dancing merrily away in his new shoes, the crowd gathered about me again, and in spite of my brother, clods of mud began to fly, and urchins to tweak at my two extended feet. – The Heart's Highway A Romance of Virginia in the Seventeeth Century by Mary E. Wilkins