What does the word quiver mean?

Usage examples for quiver

  1. Laramie eyed him without a quiver: " I'm against you, Harry." – Laramie Holds the Range by Frank H. Spearman
  2. It is quite certain that in this, more than in any previous century, the nerves quiver at the least shock. – Là-bas by J. K. Huysmans
  3. The statue moves a little, and the red lips swell, quiver, and yet she does not speak. – Floyd Grandon's Honor by Amanda Minnie Douglas