French town noted for its Gothic cathedral (8)
I believe the answer is:
chartres
'french town noted for its gothic cathedral' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for chartres that I've seen before include "N French city with a distinctive Gothic cathedral" , "French town with famous cathedral" , "City and Gothic cathedral in N France" , "Gothic cathedral on R. Eure" , "French city with a cathedral renowned for its stained glass windows" .)