μηχαναῖς (mechanais)
μηχαναῖς is an Ancient Greek form of μηχανή, meaning “device, means, machine”. It is the dative plural feminine noun.
Found 65 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 2.18.1: ὁ δὲ στρατὸς τῶν Πελοποννησίων προϊὼν ἀφίκετο τῆς Ἀττικῆς ἐς Οἰνόην πρῶτον, ᾗπερ ἔμελλον ἐσβαλεῖν. καὶ ὡς ἐκαθέζοντο, προσβολὰς παρεσκευάζοντο τῷ τείχει ποιησόμενοι μηχαναῖς τε καὶ ἄλλῳ τρόπῳ·
All forms of μηχανή (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.