The Collaborative International Dictionary of English v.0.48:

Peasant \Peas"ant\, n. [OF. pa["i]sant (the i being perh. due to
   confusion with the p. pr. of verbs), pa["i]san, F. paysan,
   fr. OF. & F. pays country, fr. L. pagus the country. See
   Pagan.]
   A countryman; a rustic; especially, one of the lowest class
   of tillers of the soil in European countries.
   [1913 Webster]

   Syn: Countryman; rustic; swain; hind.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Peasant \Peas"ant\, a.
   Rustic, rural. --Spenser.
   [1913 Webster]

WordNet (r) 3.0 (2006):

peasant
    n 1: a country person [syn: peasant, provincial, bucolic]
    2: one of a (chiefly European) class of agricultural laborers
    3: a crude uncouth ill-bred person lacking culture or refinement
       [syn: peasant, barbarian, boor, churl, Goth,
       tyke, tike]