The phrase "best defense" means having the most effective or strongest protection against something negative or harmful.
Sentences with «best defence»
They have the second best defence in the league, but the seventh most potent attack. (pollemma.com)
However, used in conjunction with proper nutrition and good hygiene, vaccination is clearly your pet's best defence against disease. (gatehousevets.com)
But if other variables are to be thrown in such as goals scored, combination of goals scored and conceded, etc, the impact of best defence will decline significantly. (justarsenal.com)