κοινοτάφιον
From LSJ
κρεῖττον εἶναι φιλοσόφως ἀποθανεῖν ἢ ἀφιλοσόφως ζῆν → that it is better to die in manner befitting a philosopher than to live unphilosophically
English (LSJ)
[ᾰ], τό,
A public grave, Ulp.ad D.18.208 (p.111 Dobson).
German (Pape)
[Seite 1469] τό, gemeinsames Grab, Sp.