πτυχίς

πτῠχ-ίς, ίδος, ἡ,

• slab, in sg. as collective, μαρμάρων πτυχίς Procop.Gaz. Ecphr. p.151 B.; = ἀκροστόλιον, the part of a ship on which the name was inscribed, Poll. 1.86; cf. πτύξ v.