RAISE ONE'S EYEBROWS (OR AN EYEBROW)
Meaning of RAISE ONE'S EYEBROWS (OR AN EYEBROW) in English
raise one's eyebrows ( or an eyebrow)
show surprise or mild disapproval.
→ eyebrow
Concise Oxford English vocab.
Сжатый оксфордский словарь английского языка.
2004