Source : Webster's Revised Unabridged Dictionary (1913)

Jabot \Jab"ot\, n. [F.]
   1. Originally, a kind of ruffle worn by men on the bosom of
      the shirt.

   2. An arrangement of lace or tulle, looped ornamentally, and
      worn by women on the front of the dress.

Source : WordNet®

jabot
     n : a ruffle on the front of a woman's blouse or a man's shirt