Settle in tents (6)
I believe the answer is:
encamp
'settle in tents' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for encamp that I've seen before include "Settle under canvas" , "Bivouac" , "Establish tented accommodation (for soldiers)" , "Lodge in tents (mil.)" , "Establish a tented site" .)