Answer welcome, encapsulating blokes' understanding (9)
I believe the answer is:
agreement
'understanding' is the definition.
(I know that understanding can be written as agreement)
'answer welcome encapsulating blokes'' is the wordplay.
'answer' becomes 'a' (abbreviation eg in Q and A).
'welcome' becomes 'greet' (to greet someone is to welcome them).
'encapsulating' means one lot of letters goes inside another (inserted letters are absorbed or encapsulated).
'blokes'' becomes 'men' (bloke can informally mean a man).
'greet' going around 'men' is 'greement'.
'a'+'greement'='AGREEMENT'
(Other definitions for agreement that I've seen before include "State of being consistent" , "understanding" , "Union < matching" , "concert" , "in sympathy" .)