What is "napus"

Napus \Na"pus\, n. [L.] (Bot.) A kind of turnip. See Navew.

Turnip \Tur"nip\, n. [OE. turnep; probably fr. turn, or F. tour a turn, turning lathe + OE. nepe a turnip, AS. n[=ae]pe, L. napus. Cf. Turn,v. t., Navew.] (Bot.) The edible, fleshy, roundish, or somewhat conical, root of a cruciferous plant ( Brassica campestris, var. Napus); also, the plant itself. [Formerly written also turnep.] Swedish turnip (Bot.), a kind of turnip. See Ruta-baga. Turnip flea (Zo["o]l.), a small flea-beetle ( Haltica, striolata syn. Phyllotreta striolata), which feeds upon the turnip, and often seriously injures it. It is black with a stripe of yellow on each elytron. The name is also applied to several other small insects which are injurious to turnips. See Illust. under Flea-beetle. Turnip fly. (Zo["o]l.)

1. The turnip flea.

2. A two-winged fly ( Anthomyia radicum) whose larv[ae] live in the turnip root.