A vessel is anything that holds something, and the word has held that meaning with remarkable consistency for over two thousand years. Latin vas meant a container of any kind — a pot, a dish, a piece of equipment. Its diminutive vascellum ('little container') passed through Vulgar Latin into Old French, where vaissel could mean a drinking cup, a piece of tableware, or a ship. English inherited all these senses when it borrowed the word around 1290. The nautical meaning — treating a ship as a large floating container — was well established by the fourteenth century. The anatomical sense followed in the fifteenth century, when physicians described veins and arteries as vessels carrying blood, a metaphor so effective it became the literal medical term. The related word vase took a different French path into English, arriving in the seventeenth century with the narrower meaning of a decorative container for flowers. Vascular, from the same root, anchors the family in biology.