The Collaborative International Dictionary of English v.0.48:

Tuxedo \Tux*e"do\, Tuxedo coat \Tux*e"do coat`\, n.
   1. A kind of black jacket for semiformal evening dress made
      without tails, usually of black or dark blue color and
      having satin or grosgrain facing on the lapels; -- so
      named after a fashionable country club at Tuxedo Park, New
      York. [U. S.] --[RHUD]
      [Webster 1913 Suppl. +PJC]

   2. The complete semiformal evening suit, including the tuxedo
      jacket, matching trousers, and black bow tie, and usually
      including a cummerbund; -- the style of shirt worn with
      this suit varies, and the outfit may include a dickey.
      --[RHUD]
      [PJC]

WordNet (r) 3.0 (2006):

tuxedo
    n 1: semiformal evening dress for men [syn: dinner jacket,
         tux, tuxedo, black tie]

The Free On-line Dictionary of Computing (30 December 2018):

Tuxedo

    Cross-platform distributed
   transaction monitor middleware marketed by BEA systems.
   Tuxedo supports the production of scalable client-server
   applications and the coordination of transactions spanning
   heterogeneous databases, operating systems, and
   hardware.

   BEA Home (http://beasys.com/).

   [Connection with Novell, Inc.?]

   (2003-01-08)