1. A blanket (or toy) carried by a child to reduce anxiety

Stems from the Peanuts comic where the character Linus always had his blanket with him.

2. (informal) anything that an adult person uses to reduce their anxiety

This phrase can also be used to indicate a male friend whom a girl has no romantic interest but uses him to to cock block other males at parties, dances, or other events.
Whenever my boyfriend doesn't want to go out dancing, I take Kyle to keep the other guys away. He's sort of my security blanket.
by TheBlankey January 29, 2006
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Something put on or given to a victim after a traumatizing event.
Firemen wrapped the child in a security blanket after rescuing them from the burning house.
I always calm down when I am cuddled up with my security blanket.
Lola has a security blanket to help with her anxiety.
by sayrxn August 20, 2018
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An object or act that assures one of safety and security.
This phrase was first derived from the blanket a characket from Peanuts(Charlie brown) always had with him. If memory serves me right a US Present coined the phrase.
1. The addition of cameras and patrolling officers will creat a security blanket for the students on campus.
2. Driving fast makes me feel safe. Like wrapping a blanket around me, it shields all the bad things from coming in.
by Machinus July 10, 2005
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A security blanket is a blanket that young kids have for security.
It originates from a character in the comic strip Peanuts, named Linus van Pelt who always had a security blanket with him.
Gosh, you really need to let go of that security blanket.
by IshiftSandvich December 27, 2016
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When a group of persons of color want to go out for a night on the town, they call their token white friend to come along as a security blanket to limit harrassment by the cops.
Man, what a night. Sure glad we brought Blaine as a security blanket. If he wasn't with us, we would have been pulled out of the car and searched, or worse.
by Capt._Awsome September 24, 2020
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When a male or female feels uncomfortable having sex in someone else's house or apartment. They can only fornicate in listening distance of their parent(s).
Boy: "Hey baby, wanna come back to my apartment so we can have some alone time?"

Girl: "I'm not a huge fan of sleeping with you at your place, I would feel more comfortable with you pounding me in my parents guest room."

Boy: "Thats the room next to your parents?"

Girl: "I know" (wearing a very dirty smile)

Boy: "You definitely have security blanket sex syndrome, I should probably go look for someone else, but I think your hott so I'll be by in a little bit"
by brandyOnIce February 1, 2011
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something airwing marines hide under for protection from the "whole marine concept". easily identifiable by recognizing emphasis on words such as "mos credibility" or "quals" or "knowledgeable" (which by the way, isnt a fucking word). these marines insist they know everything, and in their world (the flightline) they do. these marines are usually poor leaders, outstanding mechanics, and nothing that hinders the faintest resemblance of a marine. some can shoot a rifle, some can run a good pft, some of them go to college, some of them pursue resident military education, some of them do some things. but none of them do all of it. they pick and choose areas to focus on, and hide from the rest of the world in the comfort of an MOS. they are also known for back dooring real marines with any desire of mos progression. some have speculated tihs is a result of fear, disdain, and others simply as a self preservation tactic to keep the standard at a level low enough to achieve.
dont listen to him he has been victimized in the airwing security blanket pandemic. that guys a shit bag, outside of the airwing, the marine corps would eat him alive and he knows it. you can be just like him, or you could start pting, shooting a rifle, attending pme, and i dont know, develop into a leader. i guess its up to you.
by H Downington III February 2, 2011
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