POPINJAY is a culture blog. Popinjay does not claim to be a guidebook or lifestyle choice. popinjay [ póppin jay ] (plural popinjays) noun Definition: arrogant person: a vain and conceited person ( dated ) If you want to write for Popinjay, send a short review of a film, book, play, restaurant, shop... whatever - and send it to our editor at: sianrathore [at] gmail [dot] com.