US state home to river touching the sea (6)
I believe the answer is:
marine
'the sea' is the definition.
(I've seen this before)
'us state home to river' is the wordplay.
'us state' becomes 'maine' (Maine is a state of the USA).
'home to' means one lot of letters goes inside another (some letters house or home others).
'river' becomes 'r' (abbreviation for river).
'maine' placed around 'r' is 'MARINE'.
'touching' is the link.
This may not be right. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for marine that I've seen before include "Member of the forces" , "seaman" , "Relating to shipping or naval matters" , "Maritime - seagoing soldier" , "Relating to the sea" .)