The Collaborative International Dictionary of English v.0.48:

Akin \A*kin"\, a. [Pref. a- (for of) + kin.]
   1. Of the same kin; related by blood; -- used of persons; as,
      the two families are near akin.
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   2. Allied by nature; partaking of the same properties; of the
      same kind. "A joy akin to rapture." --Cowper.
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            The literary character of the work is akin to its
            moral character.                      --Jeffrey.
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   Note: This adjective is used only after the noun.
         [1913 Webster]

WordNet (r) 3.0 (2006):

akin
    adj 1: similar in quality or character; "a feeling akin to
           terror"; "kindred souls"; "the amateur is closely related
           to the collector" [syn: akin(p), kindred]
    2: related by blood [syn: akin(p), blood-related, cognate,
       consanguine, consanguineous, consanguineal, kin(p)]