ἴπτομαι
From LSJ
εἰργάζοντο λογάδην φέροντες λίθους καὶ ξυνετίθεσαν ὡς ἕκαστόν τι ξυμβαίνοι → they went to work bringing the stones as they picked them out and put them together as each one happened to fit
English (LSJ)
fut. ἴψομαι: aor. 1 ἰψάμην:—
A press hard, oppress, μέγα δ' ἴψαο λαὸν Ἀχαιῶν Il.1.454, 16.237; τάχα δ' ἴψεται υἷας Ἀχαιῶν 2.193: generally, hurt, harm, σὺ τόνδε μηρὸν ἴψω; Theoc.Adon.19, cf. Str. 8.6.7:—Act., ἴπτω, = βλάπτω, only in EM481.3; ἶψαι, ἴψας, Hsch. (Perh. related to ἰάπτω (B) or to ἶπος.)