1. A location or region that is dangerous or full of risk, where harm or injury is likely to occur
The construction site is a perilous area; workers must wear safety equipment at all times.
O canteiro de obras é uma área perigosa; os trabalhadores devem usar equipamento de segurança o tempo todo.
2. A geographical zone marked by hazards such as crime, natural disasters, or environmental dangers
During the storm warning, residents were advised to avoid the perilous area near the river.
Durante o aviso de tempestade, os residentes foram aconselhados a evitar a área perigosa perto do rio.