bachelor at arms

/ˈbætʃələr ət ɑrmz/
noun
  1. A young knight who served under another knight's banner, especially in medieval times.
    • In the castle courtyard, the bachelor-at-arms pledged loyalty to his lord.
    • The story tells of a brave bachelor-at-arms who fought in the king's army.
    • The young bachelor-at-arms trained daily with his sword and shield.
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