Source : Webster's Revised Unabridged Dictionary (1913)

Reformatory \Re*form"a*to*ry\ (-t?*r?), a.
   Tending to produce reformation; reformative.

Reformatory \Re*form"a*to*ry\, n.; pl. {-ries} (-r?z).
   An institution for promoting the reformation of offenders.

         Magistrates may send juvenile offenders to
         reformatories instead of to prisons.     --Eng. Cyc.

Source : WordNet®

reformatory
     adj : tending to reform; "reformative and rehabilitative
           agencies"; "reformatory punishment" [syn: {reformative}]
     n : correctional institution for the detention and discipline
         and training of young or first offenders [syn: {reform
         school}, {training school}]