Turned bunk beds stripped after a time (7)
I believe the answer is:
rotated
'turned' is the definition.
(rotating is a kind of turning)
'bunk beds stripped after a time' is the wordplay.
'bunk' becomes 'rot' (synonyms).
'stripped' says to take the centre (outside letters removed).
'after' means one lot of letters go next to another.
'time' becomes 't' (abbreviation).
The central letters of 'beds' are 'ed'.
'a'+'t'='at'
'ed' after 'at' is 'ated'.
'rot'+'ated'='ROTATED'
(Other definitions for rotated that I've seen before include "Went round" , "Spun" , "Turner did?" , "Had spin" , "Turned around axis or central point" .)