Noun | 1. | serjeant-at-arms - an officer (as of a legislature or court) who maintains order and executes commands law-makers, legislative assembly, legislative body, legislature, general assembly - persons who make or amend or repeal laws officeholder, officer - someone who is appointed or elected to an office and who holds a position of trust; "he is an officer of the court"; "the club elected its officers for the coming year" |