Todorov raises an eyebrow and lets his toothy smile spell a vague disbelief.
He raised an eyebrow at the presumption of an Aircraftman Second Class introducing himself, and mumbled his name.
It barely raised an eyebrow, perhaps because many assumed it was yet another iteration of the same old pipedream.
eyebrow eye·brow (ī'brou')
The bony ridge that extends over the eye.
The arch of short hairs that covers this ridge.