What does the word buckler mean?

Usage examples for buckler

  1. So large were these that in naval encounters, if the fear of falling into the enemy's hands forced them to throw themselves into the sea, they could float on their shields; and after death in battle a soldier was carried to his grave on his buckler. – The Dragon and the Raven or, The Days of King Alfred by G. A. Henty
  2. He shall defend thee under his wings, and thou shalt be safe under his feathers: his faithfulness and truth shall be thy shield and buckler. – The Lure of the Labrador Wild by Dillon Wallace
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