Palmar digital veins
Blood vessels · Latin: Venae digitales palmares
The palmar digital veins (or volar digital veins) on each finger are connected to the dorsal digital veins by oblique intercapitular veins.
Some sources distinguish between the "proper palmar digital veins", which are more distal, and the "common palmar digital veins", which are more proximal.
Definition from Wikipedia, CC BY-SA 4.0.