moustache       
noun [ C ] mainly UK (US usually mustache) uk/məˈstɑːʃ/ us/ˈmʌs.tæʃ/
B1 髭,八字须
hair that a man grows above his upper lip
  Groucho Marx had a thick, black moustache. 格劳乔‧马克思留着浓密的黑色八字须。 
 See also: tash
 - More examples
 - He had a long droopy moustache.
 - He shaved off his beard but kept his moustache.
 - Greg decided to grow a moustache.
 - I wish he'd shave off that moustache!