Definition of sleeves:
(n) :
The part of a garment that covers the arm.
(n) :
A protective jacket or case, especially for a record, containing art and information about the contents; also the analogous leaflet found in a packaged CD.
(n) :
A (usually tubular) covering or lining to protect a piece of machinery etc.
(n) :
A narrow channel of water.
(n) :
A tattoo covering the whole arm.
(v) :
(transitive) To fit and attach a sleeve to an upper garment (e.g. to a shirt, blouse, sweater, jacket, coat, etc.) or to a folder.