From Wiktionary, the free dictionary
Literally, “to name the oxen”.
dar nome aos bois (first-person singular present dou nome aos bois, first-person singular preterite dei nome aos bois, past participle dado nome aos bois)
- (idiomatic) to accuse by name, to grass, to snitch
- Synonym: dedurar
- (idiomatic) to name, to give names to yet unnamed things
