Source : Webster's Revised Unabridged Dictionary (1913)

Confine \Con*fine"\, v. t. [imp. & p. p. {Confined}; p. pr. &
   vb. n. {Confining}.] [F. confiner to border upon, LL.
   confinare to set bounds to; con- + finis boundary, end. See
   {Final}, {Finish}.]
   To restrain within limits; to restrict; to limit; to bound;
   to shut up; to inclose; to keep close.

         Now let not nature's hand Keep the wild flood confined!
         let order die!                           --Shak.

         He is to confine himself to the compass of numbers and
         the slavery of rhyme.                    --Dryden.

   {To be confined}, to be in childbed.

   Syn: To bound; limit; restrain; imprison; immure; inclose;
        circumscribe; restrict.

Source : WordNet®

confining
     adj 1: restricting the scope or freedom of action [syn: {constraining},
             {constrictive}, {limiting}, {restricting}]
     2: crowded; "close quarters" [syn: {close}]