Real Dictionary

ginger
colour: Ginger is used to describe things that are orangey-brown in colour.
uncountable noun: Ginger is the root of a plant that is used to flavour food. It has a sweet spicy flavour and is often sold in powdered form.

Ginger in American English
a feminine name
an Asiatic herb (Zingiber officinale) of the ginger family, widely cultivated in the tropics for its aromatic rhizome, used as a spice or perfume and in medicine
designating a family (Zingiberaceae, order Zingiberales) of aromatic, monocotyledonous tropical plants, including galangal
to flavor with ginger
adjective: flavored or made with ginger
noun: a female given name, form of Virginia or Regina
noun: a reedlike plant, Zingiber officinale, native to the East Indies but now cultivated in most tropical countries, having a pungent, spicy rhizome used in cookery and medicine
transitive verb: to treat or flavor with ginger

ginger in British English
noun: any of several zingiberaceous plants of the genus Zingiber, esp Z. officinale of the East Indies, cultivated throughout the tropics for its spicy hot-tasting underground stem
verb: to add the spice ginger to (a dish)