What does the word untie mean?

Usage examples for untie

  1. I strapped my rifle over my shoulder, and then went out to untie my bear cub. – The Young Forester by Zane Grey
  2. Bud unwound the scarf that protected his ears, shook the water from his jacket, and began to untie the strings that secured pieces of sacking to his feet. – A Tar-Heel Baron by Mabell Shippie Clarke Pelton
  3. The lieutenant stood close by, and, without waiting to hear whether or not the engineers were ready to start, shouted: " Untie that line." – Frank on the Lower Mississippi by Harry Castlemon