The Collaborative International Dictionary of English v.0.48:

Wrapper \Wrap"per\, n.
   1. One who, or that which, wraps.
      [1913 Webster]

   2. That in which anything is wrapped, or inclosed; envelope;
      covering.
      [1913 Webster]

   3. Specifically, a loose outer garment; an article of dress
      intended to be wrapped round the person; as, a morning
      wrapper; a gentleman's wrapper.
      [1913 Webster]

WordNet (r) 3.0 (2006):

wrapper
    n 1: a loose dressing gown for women [syn: negligee,
         neglige, peignoir, wrapper, housecoat]
    2: the covering (usually paper or cellophane) in which something
       is wrapped [syn: wrapping, wrap, wrapper]
    3: cloak that is folded or wrapped around a person [syn: wrap,
       wrapper]

The Free On-line Dictionary of Computing (19 January 2023):

wrapper

    Code which is combined with another piece of
   code to determine how that code is executed.  The wrapper
   acts as an interface between its caller and the wrapped code.
   This may be done for compatibility, e.g. if the wrapped code
   is in a different programming language or uses different
   calling conventions, or for security, e.g. to prevent the
   calling program from executing certain functions.  The
   implication is that the wrapped code can only be accessed via
   the wrapper.

   (1998-12-15)