Leans meaning : (of an object taller than its width and depth) An inclination away from the vertical. To incline, deviate, or bend, from a vertical position; to be in a position thus inclining or deviating. To incline in opinion or desire; to conform in conduct; often with to, toward, etc. Followed by against, on, or upon: to rest or rely, for support, comfort, etc. To hang outwards. To press against. Meat with no fat on it. An organism that is lean in stature. To thin out (a fuel-air mixture): to reduce the fuel flow into the mixture so that there is more air or oxygen. To conceal.