Source : Webster's Revised Unabridged Dictionary (1913)

Carrot \Car"rot\, n. [F. carotte, fr. L. carota; cf. Gr. ?]
   1. (Bot.) An umbelliferous biennial plant ({Daucus Carota}),
      of many varieties.

   2. The esculent root of cultivated varieties of the plant,
      usually spindle-shaped, and of a reddish yellow color.

Source : WordNet®

carrot
     n 1: deep orange edible root of the cultivated carrot plant
     2: perennial plant widely cultivated as an annual in many
        varieties for its long conical deep-orange edible roots;
        temperate and tropical regions [syn: {cultivated carrot},
        {Daucus carota sativa}]
     3: orange root; important source of carotene
     4: promise of reward as in "carrot and stick"; "used the carrot
        of subsidized housing for the workers to get their vote";