Source : Webster's Revised Unabridged Dictionary (1913)

Tasset \Tas"set\, n. [See {Tasse}.]
   A defense for the front of the thigh, consisting of one or
   more iron plates hanging from the belt on the lower edge of
   the corselet.

Source : WordNet®

tasset
     n : one of two pieces of armor plate hanging from the fauld to
         protect the upper thighs [syn: {tasse}]