Etymology

Jerusalem artichoke

Today it means: A variety of sunflower, Helianthus tuberosus, native to North America, having yellow flower heads and edible tubers. Full definition →

Italian articiocco girasole
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The story

  1. Italian · derived fromarticiocco girasole“sunflower artichoke”
  2. English todayJerusalem artichoke

Uncertain, possible corruption of Italian articiocco girasole (“sunflower artichoke”), with girasole mistaken for the word Jerusalem.

Etymology from Wiktionary, CC BY-SA 4.0.