when someone or something is protected
the protection of the environment
The police were issued with body armour for extra protection.
2 [uncountable and countable]
something that protects
as (a) protection (against something)
Magee pulled up his collar as protection against the breeze.
the promise of payment from an insurance company if something bad happens [= coverage]
Do you have any protection?
when criminals threaten to damage your property or hurt you unless you pay them money:
a protection racket (=the illegal activity of demanding money for protection)