axis
nounUK /ˈæksɪs/
US /ˈæksɪs/
An axis is an imaginary line that something turns around.
The Earth spins on its axis once every day.
SYNONYMS
OTHER MEANINGS
2. A line on a graph used to measure positions.
Plot the numbers along the x-axis and the y-axis.
3. An agreement between two or more countries.
The two nations formed an axis to work together.
4. The second bone in the neck that the head turns on.
The axis lets your head nod and turn.