wrapper

Etymology

From Middle English wrappere, equivalent to wrap + -er.

noun

1. Something that is wrapped around something else as a cover or protection: a wrapping.
   Messy trains are horrible, but you can sort of understand passengers leaving their sandwich wrappers and paper cups if there is nowhere to dispose of them. April 5 2023, Pip Dunn, “'196s' giving commuters a smoother ride”, in RAIL, number 980, page 55
2. An outer garment; a loose robe or dressing gown.
   Please to examine, at your leisure, the inner linings of the cuff of his left sleeve, and the several little packages which may be found in the somewhat capacious pockets of his embroidered morning wrapper. 1839, Edgar Allan Poe, William Wilson
3. One who, or that which, wraps.
   He proved to be a remarkably efficient wrapper of parcels.
4. (object-oriented programming) A construct, such as a class or module, that serves to mediate access to another.
   We need a Perl wrapper for this C++ library.