He looked at me, a puzzled frown between his black eyebrows.

I sighed and rubbed at the space between my eyebrows.

She squinted and tried to ignore the pain between her eyebrows, without success.

A line appeared between his eyebrows as he frowned at it.

How do I ease the appearance of deep lines between my eyebrows?

A line formed between her eyebrows as she looked up at him.

Little frown lines appeared between her eyebrows when she saw us.

Two small frown lines had fixed themselves between his eyebrows.

He can't even find agreement between his head hair and his eyebrows.

The Duke had not moved, but there was a line of concentration between his eyebrows.