sleeve

Concise Oxford English Dictionary © 2008 Oxford University Press:
sleeve/sliːv/

▶noun

• 1 the part of a garment that wholly or partly covers a person's arm.

• 2 a protective paper or cardboard cover for a record.

  ■ a protective or connecting tube fitting over a rod, spindle, or smaller tube.

• 3 a windsock.

  ■ a drogue towed by an aircraft.

– phrases
up one's sleeve kept secret and in reserve for use when needed.

– derivatives
sleeved adjective,
sleeveless adjective.

– origin OE slēfe, slīef(e), slȳf.