Source : Webster's Revised Unabridged Dictionary (1913)

Confinement \Con*fine"ment\, n.
   1. Restraint within limits; imprisonment; any restraint of
      liberty; seclusion.

            The mind hates restraint, and is apt to fancy itself
            under confinement when the sight is pent up.
                                                  --Addison.

   2. Restraint within doors by sickness, esp. that caused by
      childbirth; lying-in.

Source : WordNet®

confinement
     n 1: concluding state of pregnancy; from the onset of labor to
          the birth of a child; "she was in labor for six hours"
          [syn: {parturiency}, {labor}, {labour}, {lying-in}, {travail},
           {childbed}]
     2: the act of restraining of a person's liberty by confining
        them
     3: the state of being confined; "he was held in confinement"