A knight of the lowest order; he was permitted to display only a pennon.(noun)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "bachelor-at-arms" in a sentence
"Their feudal discipline, moreover, in which the youth who entered the service of a veteran as page, rose in time to the rank of esquire and bachelor-at-arms, and finally won his spurs on some well-contested field, was eminently favourable to the training and proficiency of military talents."