The arch of short hairs covering this ridge.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "eyebrow" in a sentence
"The main eyebrow-raisers in the article came here:"
"Also, in case you're wondering, the black blob above my right eyebrow is the cat, who took my vanity photography as an opportunity to try a little eyebrow munching."
"I could leaven my directionless Dukelsky-esque noodlings with entire pieces by Schoenberg and Feldman with nary a raised eyebrow from the residents."