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