bloodletting - formerly used as a treatment to reduce excess blood (one of the four humors of medieval medicine)

cannon - (Middle Ages) a cylindrical piece of armor plate to protect the arm

chain armor, chain armour, chain mail, ring armor, ring armour, ring mail, mail - (Middle Ages) flexible armor made of interlinked metal rings

habergeon - (Middle Ages) a light sleeveless coat of chain mail worn under the hauberk

miniature, illumination - painting or drawing included in a book (especially in illuminated medieval manuscripts)

pavis, pavise - (Middle Ages) a large heavy oblong shield protecting the whole body; originally carried but sometimes set up in permanent position

humour, humor - (Middle Ages) one of the four fluids in the body whose balance was believed to determine your emotional and physical state; "the humors are blood and phlegm and yellow and black bile"

Cockaigne - (Middle Ages) an imaginary land of luxury and idleness

courtly love - (Middle Ages) a highly conventionalized code of conduct for lovers

knight errantry - (Middle Ages) the code of conduct observed by a knight errant who is wandering in search of deeds of chivalry

Titania - (Middle Ages) the queen of the fairies

esquire - (Middle Ages) an attendant and shield bearer to a knight; a candidate for knighthood

palsgrave, palatine - (Middle Ages) the lord of a palatinate who exercised sovereign powers over his lands

Tristan, Tristram - (Middle Ages) the nephew of the king of Cornwall who (according to legend) fell in love with his uncle's bride (Iseult) after they mistakenly drank a love potion that left them eternally in love with each other

Iseult - (Middle Ages) the bride of the king of Cornwall who (according to legend) fell in love with the king's nephew (Tristan) after they mistakenly drank a love potion that left them eternally in love with each other

helot, serf, villein - (Middle Ages) a person who is bound to the land and owned by the feudal lord

history - the aggregate of past events; "a critical time in the school's history"

age, historic period - an era of history having some distinctive feature; "we live in a litigious age"