Jerusalem artichoke Meaning, Definition & Usage

  1. noun edible tuber of the Jerusalem artichoke
  2. noun tall perennial with hairy stems and leaves; widely cultivated for its large irregular edible tubers
    girasol; Jerusalem artichoke sunflower; Helianthus tuberosus.
  3. noun sunflower tuber eaten raw or boiled or sliced thin and fried as Saratoga chips
    sunchoke.

WordNet

Definitions
  1. Perh. a corrupt. of It. girasole i.e., sunflower, or turnsole. See Gyre, Solar. (Bot.) (a) An American plant, a perennial species of sunflower (Helianthus tuberosus), whose tubers are sometimes used as food . (b) One of the tubers themselves.

Webster 1913