1. A theft or larceny committed with the use of weapons or threat of weapons
The bank was hit by an armed robbery yesterday.
O banco foi vítima de um roubo à mão armada ontem.
2. A felony crime in which someone takes property from a person or place using force, violence, or threat of violence with a weapon
He was sentenced to 10 years for armed robbery.
Ele foi condenado a 10 anos por roubo à mão armada.