What does the word shackle mean?

Usage examples for shackle

  1. 2834. Close fitting socket- pieces b b embrace each end of the specimen, and also the turned collar at the extremity of the shackle a. – Modern Machine-Shop Practice, Volumes I and II by Joshua Rose
  2. He grasped the slippery side of the skip and felt the shackle loop. – The Girl From Keller's Sadie's Conquest by Harold Bindloss
  3. Every bond and shackle they found was promptly tossed overboard. – White Fire by John Oxenham