κοινοτάφιον
From LSJ
Ὅρκον δὲ φεῦγε καὶ δικαίως κἀδίκως (κἂν δικαίως ὀμνύῃς) → Iurare fugias, vere, falso, haud interest → Zu schwören meide, gleich ob richtig oder falsch
English (LSJ)
[ᾰ], τό, A public grave, Ulp.ad D.18.208 (p.111 Dobson).
German (Pape)
[Seite 1469] τό, gemeinsames Grab, Sp.