cougar  
noun [ C ] uk/ˈkuː.ɡər/ us/ˈkuː.ɡɚ/
  (ANIMAL)     
  mainly US (UK usually puma)美洲狮 
a large, brown wild cat that lives in North and South America
   (WOMAN)     
 informal与青年男子有性关系的岁数较大的女人 
an older woman who has sexual relationships with younger men