peytrel

from The Collaborative International Dictionary of English v.0.48

Peytrel \Pey"trel\, n. [OF. peitral. See {Poitrel}.] (Anc.
   Armor)
   The breastplate of a horse's armor or harness. [Spelt also
   {peitrel}.] See {Poitrel}. [Obs.] --Chaucer.
   [1913 Webster]