Definitions
1.nounOne who buckles something.
2.nounA kind of shield, of various shapes and sizes, held with a hand (usually the left) for protecting the front of the body. In the sword and buckler play of the Middle Ages in England, the buckler was a small shield, used, not to cover the body, but to stop or parry blows.
3.nounA shield resembling the Roman scutum. In modern usage, a smaller variety of shield is usually implied by this term.
4.nounOne of the large, bony, external plates found on many ganoid fishes.
5.nounThe anterior segment of the shell of a trilobites.
6.nounA block of wood or plate of iron made to fit a hawse hole, or the circular opening in a half-port, to prevent water from entering when the vessel pitches.
7.verbTo shield; to defend.