eye ‧ brow /ˈaɪbraʊ/ BrE AmE noun [countable]
1 . the line of hair above your eye:
thick bushy eyebrows
2 . raise your eyebrows to move your eyebrows upwards in order to show surprise or disapproval:
‘Really?’ she said, raising her eyebrows.
This decision caused a few raised eyebrows (=surprised some people) .
3 . be up to your eyebrows in something spoken to have more of something than you can deal with:
I’m absolutely up to my eyebrows in work.