Definitions
There are 2 meanings of the phrase
Security Blanket.
Security Blanket - as a noun
Anything that an adult person uses to reduce anxiety
A blanket (or toy) that a child carries around in order to reduce anxiety
Example Sentences
"She clung to her security blanket as she watched the scary movie."
"My daughter carries her security blanket everywhere she goes."
"John always sleeps with his security blanket to help him feel safe."
"The security blanket provided comfort to the child during the thunderstorm."
"As an adult, she still relied on her security blanket to ease her anxiety."