Definition
A popinjay is an archaic term for a parrot, but it also refers to a vain or conceited person who pays excessive attention to their appearance. Think of it as a showoff who is all style and no substance. The word suggests someone who is flashy and overly concerned with fashion. It implies a superficiality and a desire to impress others. While initially referring to a bird, the term evolved to describe a specific type of personality. It's a slightly old-fashioned insult, but still carries a sting.