The Collaborative International Dictionary of English v.0.48:

Dispensary \Dis*pen"sa*ry\, n.; pl. Dispensaries. [Cf. F.
   dispensaire.]
   1. A place where medicines are prepared and dispensed; esp.,
      a place where the poor can obtain medical advice and
      medicines gratuitously or at a nominal price.
      [1913 Webster]

   2. A dispensatory. --Pope.
      [1913 Webster]