There are multiple definitions - click on the translation that matches your context.
ameaça means:
substantivo
partial
noun
"Assault" is broader in meaning than "ameaça". "Ameaça", as provided for in section 147 of the Brazilian Penal Code, means threatening someone with serious harm through spoken or written words, gestures or other means. "Ameaça" is a crime, not a tort. Translator tip: "Assault" and "assalto" are false cognates!
(CRIMINAL, TORT) the use or threat of force upon another person that makes that person think that they will be attacked, hurt or offensively touched
He was found guilty of assault after a trial at Canterbury Crown Court.
a physical attack on another, or a threat or attempt to do so
He was given (=sentenced to) six years for assault with a deadly weapon.