ἐπίκαρ
From LSJ
τὸ πλῆθος οὐκ εὐαρίθμητον ἦν → the crowd wasn't easy to count, the crowd was not small, it was not a small crowd
English (LSJ)
Adv.
A head-foremost, better divisim ἐπὶ κάρ, v. κάρ 11.
German (Pape)
[Seite 945] auf dem Kopfe, kopfüber, vgl. ἀνάκαρ, Il. 16, 392, richtiger getrennt geschr.
Greek (Liddell-Scott)
ἐπίκᾰρ: Ἐπίρρ., ἐπὶ κεφαλήν, εἰς τὸ κάταντες, ἀλλὰ κάλλιον διῃρημένως, ἐπὶ κάρ. ἴδε κὰρ Π. Ἡσύχ.