Source : Webster's Revised Unabridged Dictionary (1913)

Enchain \En*chain"\, v. t. [F. encha[^i]ner; pref. en- (L. in)
   cha[^i]ne chain. See {Chain}, and cf. {Incatenation}.]
   1. To bind with a chain; to hold in chains.

   2. To hold fast; to confine; as, to enchain attention.

   3. To link together; to connect. --Howell.

Source : WordNet®

enchain
     v : restrain or bind with chains