jerusalem artichoke

noun

1. Also called girasol. a sunflower, Helianthus tuberosus, having edible, tuberous, underground stems or rootstocks.
2. Also called sunchoke. the tuber itself.

noun

1. a North American sunflower, Helianthus tuberosus, widely cultivated for its underground edible tubers
2. the tuber of this plant, which is cooked and eaten as a vegetable