The Collaborative International Dictionary of English v.0.48:

Pewter \Pew"ter\ (p[=u]"t[~e]r), n. [OE. pewtyr, OF. peutre,
   peautre, piautre: cf. D. peauter, piauter, It. peltro, Sp. &
   Pg. peltre, LL. peutreum, pestrum. Cf. Spelter.]
   1. A hard, tough, but easily fusible, alloy, originally
      consisting of tin with a little lead, but afterwards
      modified by the addition of copper, antimony, or bismuth.
      [1913 Webster]

   2. Utensils or vessels made of pewter, as dishes, porringers,
      drinking vessels, tankards, pots.
      [1913 Webster]

   Note: Pewter was formerly much used for domestic utensils.
         Inferior sorts contain a large proportion of lead.
         [1913 Webster]

WordNet (r) 3.0 (2006):

pewter
    n 1: any of various alloys of tin with small amounts of other
         metals (especially lead)