quiche /kiːʃ/adjective 1noun 1forms 3phrases 1 adjective1 •(slang) Extremely appealing to look at; sexually alluring.I'm not even bragging, but me and my friends are pretty much quiche. noun1 •A pie made primarily of egg and cream, perhaps mixed with chopped meat or vegetables, in a pastry crust. formsquiches · more quiche · most quiche Phrases with quiche quiche-eaterA man who is effeminate or who lacks some putative masculine virtue.