left wing; The left wing of a bird, airplane, etc.; troops on the left; In the military, a unit positioned on the left or the left side of a formation.; left fielder; In baseball, the defensive position on the left outfield or a player in the defensive position.; left wing; In soccer, the offensive position on the far left or a player in the offensive position.; left wing; leftist; An ideology or behavior being radical, socialistic or communistic, or a group or person with such tendency.