1 Then Tehran was bracketed, along with its old enemy Iraq, and North Korea, in President Bush's axis of evil.
2 His doctor checked the optical axis of the eye very carefully.
3 In physics, a torque is a vector that measures the tendency of a force to rotate an object about some axis.
4 Just think of what work it would make with the day and night! You see the earth takes twenty-four hours to turn round on its axis.
5 The orbital muscles keep the visual axis of both eyes aligned on the center of what you are looking at.
6 The earth revolves both round the sun and on its own axis.
7 The earth's axis is the line between the North and South Poles.
8 The Earth revolves about the axis which joins the North and South Poles.