1. A cosmetic product used to cover or hide blemishes, dark circles, or other skin imperfections
She applied concealer under her eyes to hide the dark circles.
Ela aplicou corretivo sob os olhos para esconder as olheiras.
2. A person or thing that conceals or hides something
The concealer of the stolen goods was caught by police.
Aquele que ocultava os bens roubados foi preso pela polícia.