Varix

n. enlarged and elongated vein, varicose vein

Varices in general refers to distended veins. It derives from the Latin word for twisted, "varix". Types of varices include: Varicose veins of lower extremitiesGastrointestinal varicesEsophageal varicesGastric varicesIntestinal varicesScrotal varices: varicocele
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Varix /va·rix/ pl. va´rices [L.] an enlarged tortuous vein, artery, or lymphatic vessel. aneurysmal varix a markedly dilated tortuous vessel. [more]Varix - Community and Resources

Noun
1. abnormally enlarged or twisted blood vessel or lymphatic vessel
(hypernym) abnormality, abnormalcy, abnormal condition
(hyponym) varicosity

(n.)
One of the prominent ridges or ribs extending across each of the whorls of certain univalve shells.
  

(n.)
A uneven, permanent dilatation of a vein.