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?!"
Eyebrow shape varies from person to person.
I want to get my eyebrow pierced soon.
Did you know paying attention to how eyebrows move makes it easier to perceive facial expressions?