Real Dictionary

carrot
countable noun: Something that is offered to people in order to persuade them to do something can be referred to as a carrot. Something that is meant to persuade people not to do something can be referred to in the same sentence as a ' stick'.
variable noun: Carrots are long, thin, orange-coloured vegetables. They grow under the ground, and have green shoots above the ground.

carrot in American English
a biennial plant (Daucus carota) of the umbel family, with fernlike leaves and compound umbels of white flowers, usually with one red flower in the center: only the cultivated variety is edible
noun: a plant, Daucus carota, of the parsley family, having pinnately decompound leaves and umbels of small white or yellow flowers, in its wild form a widespread, familiar weed, and in cultivation valued for its edible root

carrot in British English
noun: an umbelliferous plant, Daucus carota sativa, with finely divided leaves and flat clusters of small white flowers

carrot in Hospitality
noun: Carrots are long, thin, orange-colored vegetables.