lean and mean

:  to incline, deviate, or bend from a vertical position

:  to cast one's weight to one side for support

:  to rely for support or inspiration

:  the act or an instance of leaning :  inclination

:  lacking or deficient in flesh

:  containing little or no fat

:  lacking richness, sufficiency, or productiveness

:  to make lean

:  the part of meat that consists principally of lean muscle

:  to have in the mind as a purpose :  intend

:  to design for or destine to a specified purpose or future

:  to serve or intend to convey, show, or indicate :  signify

:  lacking distinction or eminence :  humble

:  lacking in mental discrimination :  dull

:  of poor, shabby, or inferior quality or status

:  occupying a middle position :  intermediate in space, order, time, kind, or degree

:  occupying a position about midway between extremes

:  being the mean of a set of values :  average

:  something intervening or intermediate

:  a middle point between extremes

:  a value that lies within a range of values and is computed according to a prescribed law: such as