\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, or
   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.)
(a) The turnip flea.
(b) A two-winged fly ({Anthomyia radicum}) whose larv[ae]
    live in the turnip root.