a large, powerful animal of the cat family that hunts in groups and lives in parts of Africa and southern Asia. Lions have yellow-brown fur and the male has a mane (= long, thick hair round its neck). 獅；獅子 
The lion shook its mane and roared. 獅子抖動鬃毛，咆哮着。 a pride of lions (= a group of them) 一群獅子 Over the past two months, 13 lions have been killed by poachers. 在過去的兩個月裏，13只獅子被偷獵者殺死。 He had once been chased and almost eaten by a lion. 他曾經被一只獅子追趕，差點被獅子吃掉。 Young Masai men gather for traditional lion hunts. 年輕的馬賽人聚集在一起進行傳統的獅子狩獵。
Oxford Collocations Dictionary… of lions- pride
- growl
- roar
- attack somebody
- …
- cub
- tamer
- hunt
- …
Word OriginMiddle English: from Anglo-Norman French liun, from Latin leo, leon-, from Greek leōn, leont-.
Idioms
the lion’s den
a difficult situation in which you have to face a person or people who are unfriendly or aggressive towards you 龍潭虎穴
the lion’s share (of something)
the largest or best part of something when it is divided 最大（或最好）的一份
to beard the lion in his den
to go to see an important or powerful person to tell them that you disagree with them, that you want something, etc. 進獅穴捋獅須（敢於觸犯有權勢者）