[1] : The Collaborative International Dictionary of English v.0.48

tasse \tasse\, n. of. tassette.
   a piece of armor for the thighs, forming an appendage to the
   ancient corselet.
   1913 webster

   note: usually the tasse was a plate of iron swinging from the
         cuirass, but the skirts of sliding splints were also
         called by this name.
         1913 webster

[2] : WordNet (r) 2.0

tasse
     n : one of two pieces of armor plate hanging from the fauld to
         protect the upper thighs syn: tasset
see also:
tasset 

Tasse >> T Words
Tasse, definition of term: Tasse
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