To twist together; to intertwine or writhe in a shared twisted motion.
From co- (together) + twist. The combination follows the standard English pattern of using co- to indicate shared action, though this particular word is archaic or dialectal.
Words like cotwist show the flexibility of English—even though it's barely used today, it could theoretically come back if we needed a perfect word for 'twist together,' proving that old words are like dormant seeds waiting for the right moment to grow.
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