Czech /t͡ʃɛk/adjective 1noun 1forms 1 adjective1 •Of, from, or pertaining to Czechia, the Czech people, culture, or language. noun1 •A person from the Czech Republic (Czechia) or of Czech descent.By 1963, almost 130,000 Czechs had migrated to this country. They tended to gravitate to the farming communities. — 1964 formsCzechs