Crossword Genius

Son needing place to go — Ukrainian maybe (4)

Ross

I believe the answer is:

slav

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'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" .)

I've seen this clue in The Times.
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