δύο
Gram. du/o numeral
Gram. du/w numeral
Gram. duoi=n numeral
Gram. duw=n numeral
Gram. duoi=si numeral
Gram. dusi/ numeral
Etym. can be indecl., like ἄμφω, by Hom., τῶν δύο μοιράων, δύω κανόνεσσι Il.; so in Hdt. and attic Prose; but declined in Trag.
"two", Il., etc.;—in Poets δύο or δύω may be joined with pl. Nouns, δύο δ᾽ ἄνδρες id=Il.:— εἰς δύο "two and two", Xen.; σὺν δύο "two" together, Il., Hdt.