Meaning of SLEEVE in English
(PROTECTIVE COVER) [noun] [C] [esp. UK] - a protective cover(UK) Can you put the record back in its sleeve (US and ANZ jacket), please?(esp. UK) A sleeve is also a tube-shaped protective covering for a part of a machine.(UK) Sleeve notes (US liner notes) are information about a performer or a performance that is supplied with a sound recording.According to the sleeve notes, she recorded all the songs at home in her attic.
Cambridge English vocab. Кембриджский английский словарь. 2012