The ruling knocked down the main defense of the site.

They were to be the main defense of the city.

The other front commanders could and did bypass the main defenses.

This wall would serve as the main defense for the acropolis until the 5th century.

One of the main defenses was to raise interest rates by tightening the money supply.

However, a sloth's main defense is to avoid being attacked in the first place.

The fort held a highly defensible position, with the cannons as the main defense.

My main defense for this gut feeling relies upon scale.

Stomach acid is one of the main defenses against bacteria.

The main defense is provided by the Americans, and it is farther back.