The Collaborative International Dictionary of English v.0.48:

Money-making \Mon"ey-mak`ing\, n.
   The act or process of making money; the acquisition and
   accumulation of wealth.
   [1913 Webster]

         Obstinacy in money-making.               --Milman.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Money-making \Mon"ey-mak`ing\, a.
   1. Affording profitable returns; lucrative; as, a
      money-making business. Opposite of unprofitable.
      [1913 Webster]

   2. Successful in gaining money, and devoted to that aim; as,
      a money-making man.
      [1913 Webster]

WordNet (r) 3.0 (2006):

moneymaking
    adj 1: producing a sizeable profit; "a remunerative business"
           [syn: lucrative, moneymaking, remunerative]
    2: profit oriented; "a commercial book"; "preached a mercantile
       and militant patriotism"- John Buchan; "a mercenary
       enterprise"; "a moneymaking business" [syn: mercantile,
       mercenary, moneymaking(a)]
    n 1: the act of making money (and accumulating wealth)