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1530s, from articiocco, Northern Italian variant of Italian arcicioffo, from Old Spanish alcarchofa, from Arabic al-hursufa "artichoke." The Northern Italian variation probably is from influence of ciocco "stump."
Folk etymology has twisted the word in English; the ending is probably influenced by choke, and early forms of the word in English include archecokk, hortichock, artychough, hartichoake. The plant was known in Italy by 1450s, brought to Florence from Naples in 1466, and introduced in England in the reign of Henry VIII. French artichaut (16c.), German Artischocke (16c.) both are also from Italian.