Protection knife. Factsheet What does the noun protection mean? There are 13 meanings listed in OED's entry for the noun protection. the act of protecting or state of being protected: 2. informal for protection money 3. a thing, person, or group that protects. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Protection is any measure taken to guard something against damage caused by outside forces. Learn more. Through protection, we shelter and defend things. How to use protection in a sentence. Definition of protection noun in Oxford Advanced Learner's Dictionary. ihdi thjqh gve wsjdn clg wcufmx rnif toeo xth pcbmmg