An opening in the wall of a fortress through which the guns are levelled; a narrow loophole through which arrows and other missiles may be shot.
A tower at the entrance to a castle or fortified town
A fortress at the end of a bridge.
A temporary wooden tower built for defensive purposes.
That which fortifies; especially, a work or works erected to defend a place against attack; a fortified place; a fortress; a fort; a castle.
A jagged pattern sometimes seen during an attack of migraine.
The act of fortifying; the art or science of fortifying places to strengthen defence against an enemy.
An increase in effectiveness, as by adding ingredients.