[ adj ]
connected by a link, as railway cars or trailer trucks
<adj.all>

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.

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.

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

1. Associated.
[PJC]

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

3. Having a connection.
[PJC]