προχθεσινός
From LSJ
μοῦνοι Ἑλλήνων δὴ μουνομαχήσαντες τῷ Πέρσῃ → alone of all Greeks we met the Persian singlehandedly, alone of all Greeks having fought singlehanded with the Persians
English (LSJ)
ή, όν,
A of the day before yesterday, EM691.56.
German (Pape)
[Seite 799] vorgestrig, E. M. v. πρῷζον.
Greek (Liddell-Scott)
προχθεσῐνός: -ή, -όν, ὡς καὶ νῦν, Ἐτυμολ. Μέγ. 691. 36. ― Ἴδε Κόντου Γλωσσ. Παρατηρ. σ. 335.