Meaning of SLEEVE in English

sleeve /sliːv/ BrE AmE noun [countable]

[ Language: Old English ; Origin: sliefe ]

1 . the part of a piece of clothing that covers all or part of your arm:

a dress with long sleeves

long-sleeved/short-sleeved etc

a short-sleeved shirt

2 . have something up your sleeve informal to have a secret plan or idea that you are going to use later:

Don’t worry. He still has a few tricks up his sleeve.

3 . a stiff paper cover that a record is stored in SYN jacket

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.