The Collaborative International Dictionary
To knit up
Knit \Knit\, v. i.
To form a fabric by interlacing yarn or thread; to weave by making knots or loops.
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To be united closely; to grow together; as, broken bones will in time knit and become sound.
To knit up, to wind up; to conclude; to come to a close. ``It remaineth to knit up briefly with the nature and compass of the seas.'' [Obs.]
--Holland.
Usage examples of "to knit up".
Even as he regained his balance, his flesh began to knit up again.
You're going to have to sleep as much as you can, give your body a chance to knit up, and don't spend half the night at the windows, Worrying.