Crossword Genius

Victor joins Olga on the river (5)

Ross

I believe the answer is:

volga

Here is my best explanation:

'the river' is the definition.
(Volga is an example)

'victor joins olga' is the wordplay.
'victor' becomes 'v' (phonetic alphabet: alpha, bravo, charlie etc.).
'joins' means one lot of letters go next to another.
'v'+'olga'='VOLGA'

'on' acts as a link.

This clue was last seen in Evening Standard