1
An opening which could be used to drop stones on enemies
2
a heavy gate with pointed ends to prevent entry into the castle
3
a bridge across the moat, which could be raised or lowered to isolate the castle in case of attack
4
a thin, slit in the wall where arrows could be fired.
5
a path round the top of a castle
6
the fortified tower in which the lord and his family lived.
7
Deep water around the castle as a first line of defence.
