n A contest between people, animals, vehicles, etc. where the goal is to be the first to reach some objective.
n Swift progress; rapid motion; an instance of moving or driving at high speed.
n (electronics, computing) A race condition; a bug or problem that occurs when two or more components attempt to use the same resource at the same time.
n A sequence of events; a progressive movement toward a goal.
n A fast-moving current of water.
n A water channel, especially one built to lead water to or from a point where it is utilised, such as that which powers a millwheel.
n A path that something or someone moves along.
n A guide or channel that a component of a machine moves along:
n (sewing, weaving) A groove on a sewing machine or a loom along which the shuttle moves.
n (engineering) A ring with a groove in which rolling elements (such as balls) ride, forming part of a rolling-element bearing (for example, a ball bearing).
n (gambling) A keno gambling session.
n A group of sentient beings, particularly people, distinguished by common ancestry, heritage or characteristics (see Wikipedia's article on historical definitions of race):
n A large group of people distinguished from others on the basis of a common heritage.
n A large group of people distinguished from others on the basis of common physical characteristics, such as skin color or hair type.
n A large group of people distinguished from others on the basis of shared characteristics or qualities, for example social qualities.
n (fantasy, science fiction, mythology) A large group of nonhumans distinguished from others on the basis of a common heritage.
n A group of organisms distinguished by common characteristics; often an informal infraspecific rank in taxonomy, below species:
n (biology) A population geographically separated from others of its species that develops significantly different characteristics; a mating group.
n (botany) A strain of plant with characteristics causing it to differ from other plants of the same species.
n (animal husbandry) A breed or strain of domesticated animal.
n (mycology, bacteriology) A strain of microorganism, fungi, etc.
n (by extension) A category or kind of thing distinguished by common characteristics.
n (obsolete) Peculiar flavour, taste, or strength, as of wine; that quality, or assemblage of qualities, which indicates origin or kind, as in wine; hence, characteristic flavour.
n (obsolete) Characteristic quality or disposition.
n (obsolete) The sexual activity of conceiving and bearing biological offspring.
n (archaic, uncountable) Ancestry.
n (obsolete) A step in a lineage or succession; a generation.
n (obsolete, uncountable) Progeny, offspring, descendants.
n A rhizome or root, especially of ginger.
n A surname.