Usos diversos da expressão "Big brother"

Pessoal,

1. an older brother. / Irmão mais velho.

Ex.: Mike is her big brother.

2. a man who serves as a companion, father figure, and role model for a boy.

Ex.: Oh and will you stop acting as his big brother like he's incapable of defending himself?

3. [Big Brother, personification of the power of the state in 1984 (1949) by George Orwell] a : the leader of an authoritarian state or movement b : an all-powerful government or organization monitoring and directing people's actions.

Ex.: Big brother is everywhere.

Referência:

Merriam-webster.com