(US, Canada, idiomatic) to laugh in secret or to oneself, usually gloatingly

A long sleeve that is disconnected past the stitching on top of the shoulder, but not underneath, where the armpit is. The top of the bicep is exposed.

A sleeve cut in two pieces, inner and outer, to allow it to take a slight L shape to accommodate the natural bend at the elbow without wrinkling; used in tailored garments.

(idiomatic) A surprise advantage of which others are not aware.

To express an emotion, belief, or stance overtly and make it an important part of one's public life.

plural of ace up one's sleeve

(UK, Canada, idiomatic) Alternative form of laugh in one's sleeve.

(idiomatic) Synonym of ace up one's sleeve

plural of trick up one's sleeve

Alternative form of leg-of-mutton sleeve