(anatomy) A large blood vessel that conveys blood from the lateral aspect of the thorax, axilla (armpit) and upper limb toward the heart.

(anatomy) A large superficial vein of the upper limb that helps drain parts of hand and forearm.

plural of saddle vein

(mineralogy, Australia) A saddle-shaped bedded mineral vein in the form of an anticline or a syncline (an inverted saddle).

(usually in the plural, informal, medicine) A blood vessel affected by telangiectasia.

plural of spider vein

(informal, medicine) telangiectasia

portal vein

(mining) A sort of iron ore, found in loose masses of a globular form, containing sparkling particles.

Quartz occurring as gangue in a vein.