Cosplay definition of cosplay by The Free DictionaryElucidate cosplay in layman's terms. Costume play refers to dressing up and pretending to be a specific character from an movie. It has become immensely popular amongst fans of geek culture around the world. Fans thoroughly design outfits and props in order to faithfully represent their favorite characters. Cosplayers commonly participate in conventions or cosplay events, where they can exhibit their creativity and network with others who share the same passion. Ultimately, costume play is an form of appreciation and commitment for
a fictional character and the love for the geek community.