πτυχίς
From LSJ
βορβόρῳ δ' ὕδωρ λαμπρὸν μιαίνων οὔποθ' εὑρήσεις ποτόν → once limpid waters are stained with mud, you'll never find a drink
English (LSJ)
ίδος, ἡ,
A slab, in sg. as collective, μαρμάρων πτυχίς Procop.Gaz.Ecphr. p.151B.; = ἀκροστόλιον, the part of a ship on which the name was inscribed, Poll.1.86; cf. πτύξ v.
