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Black book
01
lista negra, libro negro
*** a list of persons who are disapproved of or are to be punished or boycotted
02
libro negro, agenda negra
a list with contact information of people whom one secretly communicates with
Idiom
Informal
Ejemplos
The private investigator 's black book was filled with the names of informants and confidential sources who provided valuable information.
El libro negro del investigador privado estaba lleno de los nombres de informantes y fuentes confidenciales que proporcionaban información valiosa.
in one's black books
01
*** having fallen out of favor with someone.
