Gloss: to fight one on one
Transliteration: monomacheō
Strong’s: G8345
to fight in single combat , (Euripides); τινι with one, (Herdotus Historicus); of the Athenians at Marathon, μοῦνοι μουνομαχήσαντες τῷ Πέρσῃ having fought single-handed with the Persians, (Herdotus Historicus) (ML)