δυωδεκάπεδος

From LSJ

Κύριε, βοήθησον τὸν δοῦλον σου Νῖλον κτλ. → Lord, help your slave Nilos ... (mosaic inscription from 4th-cent. church in the Negev)

Source

Spanish (DGE)

-ον de doce pies de largo ξύλα CID 2.113.26 (IV a.C.).