Planet's line of rotation (4)
I believe the answer is:
axis
(Other definitions for axis that I've seen before include "Spotted deer" , "Pivot, political alliance" , "Fixed reference line" , "Feasible" , "Straight line" .)
I believe the answer is:
axis
(Other definitions for axis that I've seen before include "Spotted deer" , "Pivot, political alliance" , "Fixed reference line" , "Feasible" , "Straight line" .)