Worn groove (3)
I believe the answer is:
rut
(Other definitions for rut that I've seen before include "Grove you should not remain in" , "does get followed during this" , "Well-worn track" , "Deep tyre track" , "Furrow caused by wheels" .)
I believe the answer is:
rut
(Other definitions for rut that I've seen before include "Grove you should not remain in" , "does get followed during this" , "Well-worn track" , "Deep tyre track" , "Furrow caused by wheels" .)