Son needing place to go — Ukrainian maybe (4)
I believe the answer is:
slav
'ukrainian maybe' is the definition.
I can't judge whether this defines the answer.
'son needing place to go' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'needing' is a charade indicator (letters next to each other).
'place to go' becomes 'lav' (short for lavatory, somewhere to 'go').
's'+'lav'='SLAV'
Can you help me to learn more?
(Other definitions for slav that I've seen before include "European perhaps" , "eg a Pole" , "Person speaking one of related languages of Euro-Asian border" , "East European - Asian Russian" , "Eastern European" .)