Definition of lion noun from the Oxford Advanced American Dictionary

 

lion

 noun
noun
NAmE//ˈlaɪən//
 
 
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  • a large powerful animal of the cat family, that hunts in groups and lives in parts of Africa and southern Asia. Lions have yellowish-brown fur and the male has a mane (= long thick hair around its neck). see also mountain lion compare lioness
  • Idioms
    the lion's den
     
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    a difficult situation in which you have to face a person or people who are unfriendly or aggressive toward you
    the lion's share (of something)
     
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    the largest or best part of something when it is divided
    See the Oxford Advanced Learner's Dictionary entry: lion