Definition of sleeve
1a : a part of a garment covering an arm
b : sleevelet
2a : a tubular part (such as a hollow axle or a bushing) designed to fit over another part
on one's sleeve up one's sleeve
: in an honest and open manner
—used with wearwears his emotions on his sleeve
: held secretly in reserve
has a few tricks up her sleeve
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Time Traveler for sleeve
The first known use of sleeve was before the 12th century
See more words from the same century