ὑποστορεννύναι
From LSJ
ὁμοῦ ἦν καὶ ἔχειν τὴν πόλιν καὶ τὸ γένος ὅλον μετὰ τῆς πόλεως → it was much the same thing to have the city and to have the whole race together with the city
Greek > English (Woodhouse Verbs Reversed)
spread under, stretch under, strew under (see also: ὑποστόρνυμι)