Six-sided (9)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
hexagonal
'six-sided' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for hexagonal that I've seen before include "with several sides" , "Six-sided like geometric figure" , "Shaped like the cells in a honeycomb" .)