Translation of "Eyebrow" in French

He showed his disapproval by raising an eyebrow.

Il montra sa désapprobation en levant un sourcil.

So I went out and I bought an eyebrow pencil,

J'ai acheté un crayon à sourcils,

If you raise an eyebrow, it can mean "I want to have sex with you", but also "I find that what you just said is completely idiotic."

Si on lève un sourcil, ça peut signifier « J'ai envie d'avoir des relations sexuelles avec toi » mais aussi « Je trouve que ce que tu viens de dire est complètement idiot. »