portcullis

drawbridge

Hinged castle entrance span

• barbicanOuter defensive tower
• moatDefensive water ditch
• keepRetain or fortified tower

bailey · battlements · towers · murder hole · arrow slit · rampart · ward · parapet · turret · crenellations

grate

Framework of metal bars

• grilleProtective metal grating
• latticeOpenwork of crossed strips
• ironElement twenty-six

chains · winch · counterweight · spikes · bars · teeth · mechanism · pulley · groove · channel

siege

Encirclement forcing surrender

• garrisonStationed military force
• fortificationStrengthening defenses or nutrients
• barrierObstruction preventing passage

blockade · obstruction · protection · security · breach · assault · battering ram · invaders · repel · checkpoint

feudalism

Land-for-service social structure

• knightHonored mounted soldier
• heraldryStudy of armorial bearings
• chivalryKnightly code of honor

manor · lord · vassal · serfdom · crusades · jousting · squire · armory · trebuchet · catapult

emblem

Representational sign or device

• crestHighest point or tuft
• coat of armsHereditary symbolic emblem
• TudorSixteenth-century English ruling family

Beaufort · royal · insignia · shield · blazon · badge · Westminster · symbol · arms · device

• castleskeep, moat, drawbridge, dungeon, turret
• medievalknights, castles, cathedral, kings, queens
• medieval thingscastles, cathedrals, knights, armor, swords
• medieval warfareknights, siege warfare, castle, castle siege, siege
• castlekeep, moat, drawbridge, battlements, dungeon
• castle historymoat, drawbridge, keep, tower, battlements