a drab, unattractive, and generally uninteresting girl or woman.
Other definitions for plain-Jane (2 of 2)
simple and modest; unadorned; basic: a plain-Jane car dressed up with leather upholstery.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use plain Jane in a sentence
The Daily Pic: Fluorescent tubes as plain-Jane art supplies.
"plain Jane," laughed little Estella, swinging on Jane's arm.The Girl Scout's Triumph | Katherine Keene Galt
And it will be ever thus, plain Jane, for where could we ever find a man worthy of our splendid selves?The Camp Fire Girls on a Yacht | Margaret Love Sanderson