1 protect against attack
PHRASES heavily defended The city was heavily defended against attack.
ADV. fiercely, hotly, robustly, staunchly, stoutly, strenuously, strongly, vigorously The company has strenuously defended its decision to reduce the workforce. | publicly
PREP. against She defended her department against accusations of incompetence.
3 in sport/competitions
PREP. against The champion successfully defended his title against the American challenger.