Furrowed brow

Hello

A *brow squint* is a nonmanual signal in sign language.
Is it the same as half closed eyes?

Thank you

When you're puzzled, you put on an expression with a furrowed brow. This has the effect of making the eyes narrower. Does this fit the situation?

Thank you Henry. I'm not sure. In Sign this signal indicates a negation. I just don't understand how can one squint a brow unless he is partly closing his eyes.