, OF. bocler
, F. bouclier
, a shield with a boss, from OF. bocle
, boss. See Buckle
- A kind of shield, of various shapes and sizes, worn on one of the arms (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.
- (Zoöl.) (a) One of the large, bony, external plates found on many ganoid fishes. (b) The anterior segment of the shell of trilobites.
- (Naut.) A 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.