Rad″ish (răd″ĭsh), n. [F. radis; cf. It. radice, Pr. raditz; all fr. L. radix, -icis, a root, an edible root, especially a radish, akin to E. wort. See Wort, and cf. Eradicate, Race a root, Radix.] (Bot.) The pungent fleshy root of a well-known cruciferous plant (Raphanus sativus); also, the whole plant.
Radish fly(Zoöl.), a small two-winged fly (Anthomyia raphani) whose larvæ burrow in radishes. It resembles the onion fly. — Rat-tailed radish(Bot.), an herb (Raphanus caudatus) having a long, slender pod, which is sometimes eaten. — Wild radish(Bot.), the jointed charlock.