Follow relations leaving bathroom (5)
I believe the answer is:
ensue
'follow' is the definition.
(ensue can mean to follow or happen as a result)
'relations leaving bathroom' is the wordplay.
I cannot really understand how this works, but
'relations' could be 'ns' (N is an example) and 'ns' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for ensue that I've seen before include "Occur as a result (of)" , "Follow afterwards" , "Come to pass" , "Result in a particular way" , "Come about, result in" .)