ἐγκροτέω · enkroteō — LSJ
strike on the ground, ἐς ἓν μέλος ἐγκροτέοισαι ποσσίν beating time with the feet to one tune, Theoc. 18.7:—Med., πυγμαὶ δʼ ἦσαν ἐγκροτούμεναι the fists were dashing one against the other, E. IT 1368.
Pass., to be fastened by nails, τοίχῳ Philostr. VA 2.20.