I call round on, in the evening (7)
I believe the answer is:
ironing
'evening' is the definition.
The definition and answer can be both to do with contact as well as being present participle verbs.
Perhaps you can see a link between them that I can't see?
'i call round on' is the wordplay.
'call' becomes 'ring' (telephone call).
'round' is an insertion indicator.
'ring' enclosing 'on' is 'roning'.
'i'+'roning'='IRONING'
'in the' acts as a link.
Can you help me to learn more?
(Other definitions for ironing that I've seen before include "Making clothes smooth" , "Household chore" , "Laundry work" , "Smoothing clothes, etc" , "Pressing and smoothing" .)