Meanings of purplish line in English

He winced inwardly as he noticed the purplish line on his ring finger.

It was like looking over the sea, especially at the horizon where the land was drawn in a straight, purplish line.

That vertical purplish line coming from the sun is kind of annoying...but, turn up your volume to get the sound of the waves...ahhhhh, relaxing.

Westward, across the bay, the peaks of the cliffs showed like a low, flat coast, a dull purplish line tormented by a livid surf.

Her cheeks were colorless, and there were purplish lines under her eyes, but she spoke with exceeding calmness.

The angry, purplish lines that appeared on my body every time my illness flared were my greatest source of shame.