κηρομάρμαρος
From LSJ
ἐπ' αὐτὸν ἥκεις τὸν βατῆρα τῆς θύρας → you've come to the crux of the matter, come to the point, hit the nail on the head, you've come to the very threshold of the door, you are come to the very threshold of the door, you've arrived at the truth of the matter
English (LSJ)
ὁ, cement for making drainpipes watertight, Steph.in Hp. 2.384 D.
Greek Monolingual
κηρομάρμαρος, ὁ (Μ)
συγκολλητική ουσία που χρησιμοποιείται για στεγανοποίηση υδραγωγών αρδευτικών σωλήνων.
[ΕΤΥΜΟΛ. < κηρός + -μάρμαρος (< μάρμαρον), πρβλ. καλλιμάρμαρος, πολυμάρμαρος.
