ଅର୍ଥ : Any organization whose responsibility it is to defend against something.
ଉଦାହରଣ :
Police are the major line of defense against crime.
ସମକକ୍ଷ : line of defence
ଅର୍ଥ : Defensive structure consisting of a barrier that can be employed for defense against attack.
ସମକକ୍ଷ : line of defence