Definition of "Race" :
noun: a canal for a current of water
noun: a contest of speed
"The race is to the swift."
noun: any competition
"The race for the presidency."
noun: people who are believed to belong to the same genetic stock
"Some biologists doubt that there are important genetic differences between races of human beings."
noun: (biology) a taxonomic group that is a division of a species; usually arises as a consequence of geographical isolation within a species
noun: the flow of air that is driven backwards by an aircraft propeller
verb: compete in a race
"Let's race and see who gets there first."
verb: move hurridly
"The cars raced down the street."
verb: cause to move fast or to rush or race
"The psychologist raced the rats through a long maze."
verb: to work as fast as possible towards a goal, sometimes in competition with others