a blanket or anything similar to which a young child becomes attached as a source of comfort and security
a blanket or anything similar to which a baby or young child becomes attached as a source of comfort and security
any source of comfort or security
I know I won't need these notes in the meeting. They're just a security blanket
Brit a withholding or suppression of information by those in authority for the sake of security
A security blanket was thrown over the talks lest premature media reports jeopardized the outcome