Protective (adjective)

1. Providing protection or safety.
2. Designed or intended to protect something or someone.
3. Taking care or looking out for someone or something.

Origin:

From latin protectus, past participle of protegere ("to cover, protect"), from pro- ("before") + tegere ("to cover").

Examples:

1. The helmet is protective gear for the head.
2. The mother's love is protective and nurturing.
3. The coat is made of protective material to keep the wearer warm.
4. The company"s security measures are protective, it"s hard to hack the system.
5. The law is protective of children's rights.