Strengthening plaster

from The Collaborative International Dictionary of English v.0.48

Strengthening \Strength"en*ing\, a.
   That strengthens; giving or increasing strength. --
   {Strength"en*ing*ly}, adv.
   [1913 Webster]

   {Strengthening plaster} (Med.), a plaster containing iron,
      and supposed to have tonic effects.
      [1913 Webster]