What does the word seal mean?

Usage examples for seal

  1. In fine, the commission was written out in golden letters under his great seal, as fully, freely, and firmly, for our benefit as we could possibly desire. – A General History and Collection of Voyages and Travels, Vol. VIII. by Robert Kerr
  2. If after a time you see that the milk in your cup has turned permanently sour, break the seal. – The Song of Songs by Hermann Sudermann
  3. They looked thin and bought a seal from the natives. – True Tales of Arctic Heroism in the New World by Adolphus W. Greely