Having tenants phone back (3)
I believe the answer is:
let
'having tenants' is the definition.
I can't tell whether this definition defines the answer.
'phone back' is the wordplay.
'phone' becomes 'tel' (short for telephone).
'back' says the letters should be written in reverse.
'tel' back-to-front is 'LET'.
Can you help me to learn more?
(Other definitions for let that I've seen before include "Allow; rental period" , "Reason for scrubbing service" , "Award (a contract)" , "hired" , "Won't stop you" .)