The Collaborative International Dictionary of English v.0.48:

Boxer \Box"er\ (b[o^]ks"[~e]r), n.
   One who packs boxes.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Boxer \Box"er\, n.
   One who boxes; a pugilist.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Boxer \Box"er\, n.
   A breed of dog.
   [PJC]

WordNet (r) 3.0 (2006):

boxer
    n 1: someone who fights with his fists for sport [syn: boxer,
         pugilist]
    2: a workman employed to pack things into containers [syn:
       packer, bagger, boxer]
    3: a member of a nationalistic Chinese secret society that led
       an unsuccessful rebellion in 1900 against foreign interests
       in China
    4: a breed of stocky medium-sized short-haired dog with a
       brindled coat and square-jawed muzzle developed in Germany

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

Boxer

   1.  A visual language by Hal Abelson and Andy
   diSessa of Berkeley which claims to be the successor to
   Logo.  Boxes are used to represent scope.

   2.  A text editor for MS-DOS and Microsoft
   Windows.

   (http://boxersoftware.com/users/dhamel).

   (2001-04-30)