puce /pjuːs/adjective 1noun 1forms 3 adjective1 •Of a brownish-purple color, sometimes more or less deep red or grayish. noun1 •A brownish-purple color, sometimes more or less deep red or grayish.For blacks, browns, puces, and violets, the acetate or tartrate of iron must be employed. — 1881 formspuces · pucer · pucest