What is the meaning of Eyebrow?

The hair that grows over the bone ridge above the eye socket.

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.

A clump of waste fibres that builds up in a roller machine.

To build up waste fibres in a roller machine.

To signal with one's eyebrows.

Source: wiktionary.org