Twain (twān), a. & n. [OE. twein, tweien, tweyne, AS. twēgen, masc. See Two.] Two; -- nearly obsolete in common discourse, but used in poetry and burlesque. “Children twain.” Chaucer.
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And whosoever shall compel thee to go a mile, go with him twain. Matt. v. 41.
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In twain, in halves; into two parts; asunder.
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When old winter split the rocks in twain. Dryden.
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-- Twain cloud. (Meteor.) Same as Cumulo-stratus.
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