wrapper

noun5

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. — 2023
2. •
   A construct, such as a class or module, that serves to mediate access to another.

   • We need a Perl wrapper for this C++ library.
3. •
   One who, or that which, wraps.

   • He proved to be a remarkably efficient wrapper of parcels.
4. •
   (disapproving) A startup company that sells technology that it largely does not make.
5. •
   An outer garment; a loose robe or dressing gown.

   • It was eight o'clock to-morrow evening when I buckled up my travelling writing-desk in its leather case, paid my Bill, and got on my warm coats and wrappers. — 1855