Sets down grounds (5)
I believe the answer is:
lands
I believe this clue is a double definition.
'sets down' is the first definition.
('land' can be a synonym of 'set down')
'grounds' is the second definition.
('land' can be a synonym of 'ground')
(Other definitions for lands that I've seen before include "Alights" , "Comes ashore" , "Obtains" , "See 21" .)