51 ladies' men regularly making contact (6)
I believe the answer is:
liaise
'contact' is the definition.
The answer and definition can be both to do with communicating as well as being verbs in their base form.
Maybe you can see a link between them that I can't see?
'51 ladies' men regularly' is the wordplay.
'51' becomes 'LI' (roman numeral).
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'ladies'+'men'='ladiesmen'
The alternate letters of 'ladiesmen' are 'aise'.
'li'+'aise'='LIAISE'
'making' is the link.
Can you help me to learn more?
(Other definitions for liaise that I've seen before include "Mutually cooperate" , "Collaborate" , "Form a link (with)" , "Conduct information between two groups" , "Intercommunicate" .)