The witness was given 'blanket' protection from prosecution. [=the witness would not be prosecuted for anything]
The job was her 'security blanket'. [=the job was the thing that made her feel safe and secure]
A 'blanket' of gloom spread over the crowd when they realized their team would lose.
(..) But then I started to think about all the ways we are the same... we are all made of matter. It makes me feel like we're both under the same blanket. It is soft and fuzzy... and everything under is the same age. well billion years old. (..)2013 Her