testiere

from WordNet (r) 3.0 (2006)

testiere
    n 1: medieval plate armor to protect a horse's head [syn:
         {chanfron}, {chamfron}, {testiere}, {frontstall}, {front-
         stall}]

from The Collaborative International Dictionary of English v.0.48

Testiere \Tes`ti*[`e]re"\, n. [OF. testiere. See {Tester} a
   headpiece.]
   A piece of plate armor for the head of a war horse; a tester.
   [1913 Webster]

[email protected]