1) Bind 2) Confine 3) Fetter 4) Hold 5) Restrain 6) Restrain or bind with chains 7) Subjugate 8) To link together 9) Yoke Found on https://www.crosswordclues.com/clue/enchain
• (v. t.) To link together; to connect. • (v. t.) To hold fast; to confine; as, to enchain attention. • (v. t.) To bind with a chain; to hold in chains. Found on http://thinkexist.com/dictionary/meaning/enchain/
En·chain' transitive verb [ French enchaîner ; prefix en- (L. in ) chaîne chain. See Chain , and confer Incatenation .] 1. To bind with a chain; to hold in chains. 2. To hold fast; to confine; as, to enchain attention. 3.... Found on http://www.encyclo.co.uk/webster/E/34
to bind in or as in chain or chains; fetter; restrain: to be enchained by ignorance and superstition. · to hold fast, as the attention. Found on https://www.infoplease.com/dictionary/enchain