Definition of secure adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
of or relating to security: They kept the jewels secure in the bank. not liable or likely to fail, give way, etc.: He had a secure grip on the rope. kept in a safe place: a secure hiding place. free from anxiety: emotionally secure. confident: secure in his religious belief.
To protect or ensure the privacy or secrecy of (a telephone line, for example).