Eyebrow

wiktionary

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From Middle English eȝebreu, alteration of Old English ēaganbrū(“eyebrow”), equivalent to eye +‎ brow. The corresponding Old English ēagbrǣw meant "eyelid". Compare Dutch oogbrauw(“eyelid; eyelash; eyebrow”), German Augenbraue(“eyebrow”).

etymonline

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eyebrow (n.)

also eye-brow, early 15c., from eye (n.) + brow (q.v.; Old English eagbræw meant "eyelid").