Definitions
There are 2 meanings of the phrase
Big Brother.
Big Brother - as a noun
An older brother
A totalitarian leader and invader of privacy
Example Sentences
"My big brother is always there to protect me."
"I always look up to my big brother for guidance."
"I admire my big brother's accomplishments."
"Growing up, my big brother used to tease me."
"My big brother is my best friend."