man-at-arms

n (pl men-at-arms) (in the Middle Ages) mounted soldier with heavy armour and weapons （中世纪的）重骑兵.

malpractice, malt, malted milk, Maltese, Maltese cross, maltreat, maltreatment, mama, mamba, mamma, mammal, mammalian, mammary, mammon (also Mammon), mammoth, mammy, man, man Friday, man of letters, ,woman of letters, man of letters, woman of letters, man-eater, man-eating, man-hour, man-hunt, man-killer, man-like, man-made, man-of-war, man-powered, man-size (also man-sized), manacle, manage, manage to do, manageable, management, manager, manageress, managerial, managing director, mandarin,