Piecuch (English) comes from Polish Piecuch, from Polish pięć, from Old Polish piec, from Proto-Slavic *pȅťь, from Proto-Balto-Slavic pektis, from Proto-Indo-European pékʷ-tis, from Proto-Indo-European pekʷ-, from Proto-Indo-European h₃-ép-kʷ-.