c. 1300, "bond of marriage" (between ruling houses or noble families), from Old French aliance (12c., Modern French alliance) "alliance, bond; marriage, union," from aliier (Modern French allier) "combine, unite" (see ally (v.)). As a bond or treaty between rulers, late 14c.
1. What will be the effect of the alliance between IBM and Apple?
2. There are signs that the alliance is now fraying at the edges.
3. Yet now he was here, in extremis, to seek an alliance.
4. PLATFORM is an alliance of more than 80 rail-user groups.
5. In 1882 Germany, Austria, and Italy formed the Triple Alliance.