What does "jerusalem artichoke" mean?

A variety of sunflower, Helianthus tuberosus, native to North America, having yellow flower heads and edible tubers.

Jerusalem artichoke

Common synonyms include: girasol, helianthus tuberosus, jerusalem artichoke sunflower, sunchoke.

noun

noun ·Rare ·Advanced level

Noun

1
A variety of sunflower, Helianthus tuberosus, native to North America, having yellow flower heads and edible tubers.
2
sunflower tuber eaten raw or boiled or sliced thin and fried as Saratoga chips wordnet
3
The tuber of this plant, eaten as a vegetable.
4
tall perennial with hairy stems and leaves; widely cultivated for its large irregular edible tubers wordnet
5
edible tuber of the Jerusalem artichoke wordnet

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