Get English Helmet Definition Images. A helmet is a hat made of a strong material which you wear to protect your head. A protective head covering made of hard material, such as leather, metal.
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Helmet meaning, definition, what is helmet: A strong, hard hat that covers and protects the head: Grammatically, this word helmet is a noun, more. Noun helmet a hard or padded protective hat, various types of which are worn by soldiers, police officers, firefighters, motorcyclists.