The Collaborative International Dictionary of English v.0.48:

Enjail \En*jail"\, v. t. [imp. & p. p. Enjailed; p. pr. & vb.
   n. Enjailing.] [Pref. en- + jail. Cf. Engaol.]
   To put into jail; to imprison. [R.] --Donne.
   [1913 Webster]