The Collaborative International Dictionary of English v.0.48:

linked \linked\ (l[i^][ng]kt), a.
   1.

   1. Associated.
      [PJC]

   2. (Genetics) Exhibiting linkage[5].
      [PJC]

   3. Having a connection.
      [PJC] Linkboy

The Collaborative International Dictionary of English v.0.48:

Link \Link\ (l[i^][ng]k), v. t. [imp. & p. p. Linked
   (l[i^][ng]kt); p. pr. & vb. n. Linking.]
   To connect or unite with a link or as with a link; to join;
   to attach; to unite; to couple.
   [1913 Webster]

         All the tribes and nations that composed it [the Roman
         Empire] were linked together, not only by the same laws
         and the same government, but by all the facilities of
         commodious intercourse, and of frequent communication.
                                                  --Eustace.
   [1913 Webster]

WordNet (r) 3.0 (2006):

linked
    adj 1: connected by a link, as railway cars or trailer trucks
           [syn: coupled, joined, linked]