gingerroot

[ jin-jer-root, -roo t ]
/ ˈdʒɪn dʒərˌrut, -ˌrʊt /

noun

the rhizome of the ginger plant.
Also called root ginger, race ginger, race.

British Dictionary definitions for root ginger

root ginger

noun

the raw underground stem of the ginger plant used finely chopped or grated, esp in Chinese dishes