knit (one's) eyebrows(redirected from knits their eyebrows)
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knit (one's) eyebrows
To furrow one's brow, often due to worry or confusion. When I asked Bill about what happened, and he knit his eyebrows, I knew I was about to hear some bad news.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.