Sleeve

noun
1.
the part of a garment that covers the arm, varying in form and length but commonly tubular.
2.
an envelope, usually of paper, for protecting a phonograph record.
3.
Machinery. a tubular piece, as of metal, fitting over a rod or the like.
verb (used with object), sleeved, sleeving.
4.
to furnish with sleeves.
5.
Machinery. to fit with a sleeve; join or fasten by means of a sleeve.
Idioms
6.
have something up one’s sleeve, to have a secret plan, scheme, opinion, or the like:
I could tell by her sly look that she had something up her sleeve.
7.
laugh up / in one’s sleeve, to be secretly amused or contemptuous; laugh inwardly:
to laugh up one’s sleeve at someone’s affectations.
noun
1.
the part of a garment covering the arm
2.
a tubular piece that is forced or shrunk into a cylindrical bore to reduce the diameter of the bore or to line it with a different material; liner
3.
a tube fitted externally over two cylindrical parts in order to join them; bush
4.
a flat cardboard or plastic container to protect a gramophone record US name jacket
5.
roll up one’s sleeves, to prepare oneself for work, a fight, etc
6.
up one’s sleeve, secretly ready
verb
7.
(transitive) to provide with a sleeve or sleeves
sleepwalk