Left1  —adj. 1 on or towards the west side of the human body, or of any object, when facing north. 2 (also left) polit. Of the left. —adv. On or to the left side. —n. 1 left-hand part, region, or direction. 2 boxing a left hand. B blow with this. 3 (often left) group or section favouring socialism; socialists collectively. [old english, originally = ‘weak, worthless’]