Points out a line on the map of France (5)
I believe the answer is:
seine
'map of france' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?
'points out a line on' is the wordplay.
'points' becomes 'ne' (North and East).
'out a line' becomes 'sei' (I can't justify this - if you can you should believe this answer much more).
'on' means one lot of letters go next to another.
'ne' put after 'sei' is 'SEINE'.
'the' is the link.
Can you help me to learn more?
(Other definitions for seine that I've seen before include "Parisian river" , "Second longest river in France" , "Paris's river" , "Paris river" , "French river -- type of fishing net" .)