Definition of "fortification" in Englisch

noun

1. The act of fortifying; the art or science of fortifying places to strengthen defence against an enemy.

2. That which fortifies; especially, a work or works erected to defend a place against attack; a fortified place; a fortress; a fort; a castle.

3. An increase in effectiveness, as by adding ingredients.

4. A jagged pattern sometimes seen during an attack of migraine.