River in Dutch painting (4)
I believe the answer is:
dart
'river' is the definition.
(I've seen this before)
'dutch painting' is the wordplay.
'dutch' becomes 'd' (common abbreviation).
'painting' becomes 'art' (I've seen this before).
'd'+'art'='DART'
'in' is the link.
(Other definitions for dart that I've seen before include "shift fast" , "one destined to go on board?" , "One fired" , "Move quickly and suddenly" , "Small pointed projectile" .)