The Collaborative International Dictionary of English v.0.48:

Alliance \Al*li"ance\, v. t.
   To connect by alliance; to ally. [Obs.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Alliance \Al*li"ance\, n. [OE. aliaunce, OF. aliance, F.
   alliance, fr. OF. alier, F. allier. See Ally, and cf. LL.
   alligantia.]
   1. The state of being allied; the act of allying or uniting;
      a union or connection of interests between families,
      states, parties, etc., especially between families by
      marriage and states by compact, treaty, or league; as,
      matrimonial alliances; an alliance between church and
      state; an alliance between France and England.
      [1913 Webster]

   2. Any union resembling that of families or states; union by
      relationship in qualities; affinity.
      [1913 Webster]

            The alliance of the principles of the world with
            those of the gospel.                  --C. J. Smith.
      [1913 Webster]

            The alliance . . . between logic and metaphysics.
                                                  --Mansel.
      [1913 Webster]

   3. The persons or parties allied. --Udall.
      [1913 Webster]

   Syn: Connection; affinity; union; confederacy; confederation;
        league; coalition.
        [1913 Webster]

WordNet (r) 3.0 (2006):

alliance
    n 1: the state of being allied or confederated [syn: alliance,
         confederation]
    2: a connection based on kinship or marriage or common interest;
       "the shifting alliances within a large family"; "their
       friendship constitutes a powerful bond between them" [syn:
       alliance, bond]
    3: an organization of people (or countries) involved in a pact
       or treaty [syn: alliance, coalition, alignment,
       alinement] [ant: nonalignment, nonalinement]
    4: a formal agreement establishing an association or alliance
       between nations or other groups to achieve a particular aim
    5: the act of forming an alliance or confederation [syn:
       confederation, alliance]

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

ALLIANCE

    A complete set of CAD tools for teaching Digital
   CMOS VLSI Design in Universities.  It includes a VHDL
   compiler and simulator, logic synthesis tools, and automatic
   place and route tools.  ALLIANCE is the result of a ten years
   effort at University Pierre et Marie Curie (PARIS VI, France).

   It runs on Sun-4, not well supported: MIPS/Ultrix,
   386/SystemV.

   (1993-02-16)


The Devil's Dictionary (1881-1906):

ALLIANCE, n.  In international politics, the union of two thieves who
have their hands so deeply inserted in each other's pockets that they
cannot separately plunder a third.