The Collaborative International Dictionary of English v.0.48:

Peasantry \Peas"ant*ry\, n.
   1. Peasants, collectively; the body of rustics. "A bold
      peasantry." --Goldsmith.
      [1913 Webster]

   2. Rusticity; coarseness. [Obs.] --p. Butler.
      [1913 Webster]

WordNet (r) 3.0 (2006):

peasantry
    n 1: the class of peasants

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "peasantry":
   bourgeoisie, common people, common run, common sort, commonage,
   commonality, commonalty, commoners, commons, laborers,
   linendrapers, lower classes, lower middle class, lower orders,
   lumpen proletariat, middle class, middle orders, ordinary people,
   plain folks, plain people, proletariat, rank and file, shopkeepers,
   small tradesmen, the lower cut, the other half, the third estate,
   toilers, toiling class, upper middle class, vulgus, working class,
   working people