Word Study
twain
CIDE DICTIONARY
twain, a. & n. [OE. twein, tweien, tweyne, AS. tw, masc. See Two.].
Two; -- nearly obsolete in common discourse, but used in poetry and burlesque. Chaucer. [1913 Webster]
"And whosoever shall compel thee to go a mile, go with him twain." [1913 Webster]
"When old winter split the rocks in twain." [1913 Webster]
OXFORD DICTIONARY
twain, adj. & n. archaic two (usu. in twain).
Etymology
OE twegen, masc. form of twa TWO
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