The Collaborative International Dictionary of English v.0.48:

earned \earned\ ([~e]rnd), adj.
   1. Gained as a result of effort or action; -- used especially
      of income; as, earned income. Contrasted with unearned.
      [WordNet 1.5]

   2. (Baseball) not resulting from an error by an opposing
      team; -- used in the phrase earned runs.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Earn \Earn\ ([~e]rn), v. t. [imp. & p. p. Earned ([~e]rnd); p.
   pr. & vb. n. Earning.] [AS. earnian; akin to OHG. arn[=o]n
   to reap, aran harvest, G. ernte, Goth. asans harvest, asneis
   hireling, AS. esne; cf. Icel. ["o]nn working season, work.]
   1. To merit or deserve, as by labor or service; to do that
      which entitles one to (a reward, whether the reward is
      received or not).
      [1913 Webster]

            The high repute
            Which he through hazard huge must earn. --Milton.
      [1913 Webster]

   2. To acquire by labor, service, or performance; to deserve
      and receive as compensation or wages; as, to earn a good
      living; to earn honors or laurels.
      [1913 Webster]

            I earn that [what] I eat.             --Shak.
      [1913 Webster]

            The bread I have earned by the hazard of my life or
            the sweat of my brow.                 --Burke.
      [1913 Webster]

   Earned run (Baseball), a run which is made without the
      assistance of errors on the opposing side.

   Syn: See Obtain.
        [1913 Webster]

WordNet (r) 3.0 (2006):

earned
    adj 1: gained or acquired; especially through merit or as a
           result of effort or action; "a well-earned reputation for
           honesty"; "earned income"; "an earned run in baseball"
           [ant: unearned]