posho /ˈpɒʃəʊ/adjective 1noun 1/ˈpɔːʃɔː/ noun 1forms 4 adjective1 •(informal) Posh. noun1 •(UK, slang) A posh person.Marcus: We're very sorry. Stylax: No, we're not. For all this guy knows, we could be mega-minted poshos in disguise. Shopkeeper: It will be a superb disguise. Stylax: Cheers. — 2016 posho /ˈpɔːʃɔː/ noun1 •A food product made of cornmeal. formsposhoes · poshos · more posho · most posho