1. A shade of white that appears grayish, off-white, or soiled; white mixed with gray, brown, or other dark tones
The old building had dirty white walls that needed repainting.
O prédio antigo tinha paredes de um branco sujo que precisavam ser repintadas.
2. White color that has been stained, discolored, or lacks brightness
She wore a dirty white shirt that had yellowed over time.
Ela usava uma camisa de branco sujo que havia amarelado com o tempo.