ναύβιον · naubion — LSJ
cubic measure
cubic measure in Egypt, with side = two royal cubits (in Roman times, three cubits), used with application to earth as a unit of labour, in pl., PLille 1r. 11, Wilcken Chr. 385.8, PPetr. 3pp. 80,290, Ostr.Bodl. i 244 (all iii B. C.), Arch.Pap. 6.132 (i A. D.), POxy. 669.11 (iii A. D.):—written ναούια ib. 1053 (vi/vii A. D.).
2
in sg., tax paid by landholders in lieu of digging so many ναύβια, PTeb. 5.15 (ii B. C.); ν. κατοίκων, ἐναφεσίων, BGU 662 (ii A. D.), PTeb. 352 (ii A. D.).
3
perh. another tax, Ostr. 1396 (i A. D.), Ostr.Bodl. iii 84 (i A. D.).