eyebrow
UK: /ˈaɪbraʊ/ | US: /ˈaɪbraʊ/
n. the strip of hair growing on the ridge above a person's eye socket
n. (figuratively) a prominent or noticeable feature, often used metaphorically
The word "eyebrow" is a straightforward compound of "eye" (Old English ēage, meaning the organ of vision) and "brow" (Old English brū, originally meaning "eyelid" or "eyebrow," later generalized to "forehead ridge"). The term emerged in Middle English (ēgebru) as a literal description of the hairy arch above the eye. Over time, "brow" narrowed to specifically denote this feature, while retaining its anatomical logic.
She raised an eyebrow in skepticism.
His thick eyebrows gave him a stern appearance.
The artist carefully shaded the model's eyebrows in the portrait.
A single eyebrow hair stuck out awkwardly.
The comment made her eyebrows shoot up in surprise.