blue vein

His little chest heaved up and down; and every blue vein on his pure forehead was apparent,—bursting with passion.

But he was obsessed by the desire to kiss the tiny blue vein that nestled in the bend of her arm.

Not the tender tracery of a blue vein upon her temples that I would not lovingly render through its transparent veil of skin.

It was not necessary to point out the location of the blue vein.

"Then it is Len who has found the blue vein," cried Winslow.