A fast-running water-filled channel diverted from a river or stream used to drive a mill wheel.

The competition between nations in the field of space exploration.

(chess) A situation where both opponents are pushing (moving forward) a passed pawn in an effort to be the first to promote.

plural of race condition

plural of race traitor

A primal or primordial race; an ur-race

A primitive, primordial, or original race; a proto-race

(often proscribed, derogatory) A person who supports attitudes or positions that are against the interests or well-being of their own race.

plural of race glass

plural of race realist