The kanji and the word are exactly the same. This also includes the place where your eyebrows live: your brow.

Since this word is made up of a single kanji, it probably uses the kun'yomi reading. You haven't learned this reading yet, so here's a mnemonic to help you:

You're staring lovingly at your own eyebrows in the mirror when your mom walks in and you gasp, "Ma! You... (まゆ)" but you're in so much shock you can't finish the sentence, "Ma, you shaved off your eyebrows?!"