a separate sleeve worn under the sleeve of a dress and visible through it or extending beyond it
Word origin
[1540–50; under- + sleeve]This word is first recorded in the period 1540–50. Other words that entered Englishat around the same time include: gondola, horizon, machine, mandate, vacuumunder- is a prefixal use of under, as to indicate place or situation below or beneath (underbrush; undertow); lower in grade or dignity (undersheriff; understudy); of lesser degree, extent, or amount (undersized); or insufficiency (underfeed)