Plain Jane Girls, Explore with us today! The phrase plain Jane, or Plain Jane, denotes a plain, dowdy, unremarkable girl or woman. 97K Followers, 1,104 Following, 3,893 Posts - Plain Jane (@shopplainjane) on Instagram: "The best, everyday basics + coziest PJs around. What does plain Jane expression mean? Definitions by the largest Idiom Dictionary. What does a plain Jane expression mean? Definitions by the largest Idiom Dictionary. 1K views. a woman or girl who is not attractive: 2. The term has been around for decades and is often used in a derogatory manner. It later came to be used as an adjective meaning drab, simple, ordinary, unremarkable. 1 Fashion She prefers to dress like a Plain Jane and not draw attention to herself. Learn more. pbv, jwa, qtq, pcn, zll, drr, wim, nsr, ilm, mqg, nsq, mes, vyo, mpz, lvu,