Compound of book (“photobook”) + azul (“blue”).
- (Brazil) IPA(key): /ˈbu.ki aˈzuw/ [ˈbu.ki aˈzuʊ̯]
- (Southern Brazil) IPA(key): /ˈbu.ke aˈzuw/ [ˈbu.ke aˈzuʊ̯]
book azul m (plural books azuis)
- a secretive catalog of male models involved in high-end prostitution
- “book azul”, in Dicionário inFormal (in Portuguese), 2006–2024