stil·bes·trol /stɪlˈbɛsˌtrɔl, ˌtrol/
  己烯雌酚
  stil·bes·trol /-ˈbɪs-/ 名詞
  stilbestrol
       n : a potent estrogen used in medicine and in feed for livestock
           and poultry [syn: diethylstilbestrol, diethylstilboestrol,
            stilboestrol, DES]