sleeve 
(sl
ēv)
n.1. A part of a garment that covers all or part of an arm.
2. A case into which an object or device fits: a record sleeve.
3. A tattoo that covers all or a large part of the arm.
tr.v. sleeved,
sleev·ing,
sleeves To furnish or fit with sleeves or a sleeve.
Idiom: up (one's) sleeve Hidden but ready to be used: I still have a few tricks up my sleeve.
[Middle English sleve, from Old English slēf; see sleubh- in the Appendix of Indo-European roots.]
sleeveless adj.