eyebrow -
A dormer, usually of small size, whose roof line over the upright face is typically an arched curve, turning into a reverse curve to meet the horizontal line at either end.
Wikipedia
The eyebrow is an area of thick, delicate hairs above the eye that follows the shape of the lower margin of the brow ridges of some mammals. Their main function is to protect the eye, but they are also important to human communication and facial expression. It is not uncommon for people – women in particular – to modify their eyebrows by means of hair addition, removal, make up, or piercings.
OmegaWiki Dictionary
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eyebrow The hair that grows over the bone ridge above the eye socket.
