TWAIN
Meaning of TWAIN in English
/twayn/ , adj. , n.
two.
[ bef. 900; ME twayn orig., nom. and acc. masc., OE twegen (cf. TWO); c. obs. G zween ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012