Pronunciation: (är'ti-chōk"),[key] —n. 1. a tall, thistlelike composite plant, Cynara scolymus, native to the Mediterranean region, of which the numerous scalelike bracts and receptacle of the immature flower head are eaten as a vegetable.
2. the large, rounded, closed flower head itself.
3. See Jerusalem artichoke. Also called globe artichoke(for defs. 1, 2).