1. A straight line through a body or figure that satisfies certain conditions
   "The Earth rotates around its axis once every 24 hours"
    
2. The centre around which something rotates
   "The Earth's axis of rotation is tilted at 23.5 degrees";
   - axis of rotation
    
3. The main stem or central part about which plant organs or plant parts such as branches are arranged
   "The flower's petals were arranged symmetrically around its axis"
    
4. The 2nd cervical vertebra; serves as a pivot for turning the head
   "The axis vertebra allows for rotational movement of the head";
   - axis vertebra
    
5. A group of countries in special alliance
   "The economic axis negotiated trade agreements as a unified entity";
   - bloc

1. In World War II the alliance of Germany and Italy in 1936 which later included Japan and other nations
   "the Axis opposed the Allies in World War II"

Type of: alignment, alinement [non-standard], alliance, cervical vertebra, coalition, line, mechanism, neck bone, stalk, stem

Encyclopedia: Axis, Alabama