Definition of "wrapper" in English

noun

1. Something that is wrapped around something else as a cover or protection: a wrapping.

2. An outer garment; a loose robe or dressing gown.

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.

5. (derogatory) A startup company that sells technology that it largely does not make.