Bunkers are structures that are built to provide protection from enemy fire or other threats. They are typically made of concrete and are often used in military contexts, such as during wars or conflicts. They can also be used for civilian purposes, such as providing shelter during natural disasters. The term 'bunkers' is derived from the Dutch word 'BUNKER, ' which means 'fortified place.' The crossword solution 'traps' is related to bunkers, as it refers to the defensive measures taken to protect them, such as traps or obstacles.