ἀποταφρεύω
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
English (LSJ)
A fence off with a ditch, X.An.6.5.1, HG5.4.38; for defence or offence, D.H.2.37, 3.41.
German (Pape)
[Seite 329] durch einen Graben befestigen, Xen. An. 6, 5, 1 Hell. 5, 4, 38 u. Sp., wie Dion. Hal. 9, 8.