I saw him just a little while ago: Her brow furrowed slightly.

Her brow furrowed slightly, as if she remembered my face but not from where.

His mother's brow had furrowed slightly for a moment, then cleared.

Margo asked, brow furrowing slightly as she considered the problem.

His brow was slightly furrowed even before we spoke.

His brows were slightly furrowed, not in worry, but as though he were thinking about something.

He closed his eyes, and his brow furrowed slightly in concentration.

His brow furrowing slightly, he began to peruse the pile looking for the cover letter.

"We won't need much," said the youth, his brow furrowing slightly as he made some quick computations on the screen.

Brow furrowed slightly now, he was still working.