Father's son matures in voyages (8)
I believe the answer is:
passages
'voyages' is the definition.
The definition and answer can be both acts as well as being plural nouns.
Perhaps you can see an association between them that I can't see?
'father's son matures' is the wordplay.
'father's' becomes 'pa's' (pa can mean dad or father).
'son' becomes 's' (genealogical abbreviation for son).
'matures' becomes 'ages' ('age' can be a synonym of 'mature').
'pas'+'s'+'ages'='PASSAGES'
'in' is the link.
Can you help me to learn more?
(Other definitions for passages that I've seen before include "Narrow streets or routes" , "Corridors, ways through" , "sections of the speech" , "Texts" , "Sections of a text" .)