a blanket (or toy) that a child carries around in order to reduce anxiety
anything that an adult person uses to reduce their anxiety
security blanket 例句
英汉例句
She asked her husband to sign a pension post-nuptial as a security blanket in case of divorce.
她要老公签个婚后退休金的合同,一旦离婚,才有保障。
Instead, quantitative research is done, and done, and done again to act as a sort of security blanket (typically involving enough paper to provide warmth even in cold Winter nights!).