Related Clues:

• Pivot line
• Heavy graph line
• Geometric line
• Center of a rotation
• Graph basis
• Italy's side, once
• Imaginary line about which the Earth turns
• Base line
• Something to reflect on?
• Allies' opposition
• W.W. II foe, with 'the'
• x or y line on a graph
• x or y line
• Y = 0 line
• On which a body spins