A sleeve is the part of a garment that covers the arm, or through which the arm passes or slips.
Sleeve may also refer to:
Arm coverings: A basketball sleeve, an accessory worn by basketball players A sleeve tattoo, a tattoo arrangement that covers most or all of a person's arm Cylindrical mechanical protective liners: A sleeve (construction), used by electricians and plumbers to create an opening in cast concrete to permit the passage of a wires or pipes A cylinder sleeve lining the bore of a piston engine A sleeve valve, a type of valve mechanism for piston engines A sleeve bearing to hold a rotating shaft Generally, any tube into which another tube is inserted; in the case of small tubes it is called a thimble Other protective covers: A record sleeve, the outer covering of a vinyl record A card sleeve used to protect trading cards from damage during play A beer sleeve or koozie A sleeve gastrectomy, a surgical weight-loss procedure