Crossword Genius

Cross river with one sort of light (5)

Ross

I believe the answer is:

riled

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'cross' is the definition.
(I've seen this before)

'river with one sort of light' is the wordplay.
'river' becomes 'ri' (I can't justify this - if you can you should believe this answer much more).
'with' is a charade indicator (letters next to each other).
'one sort of light' becomes 'led' (light emitting diode).
'ri'+'led'='RILED'

Can you help me to learn more?

(Other definitions for riled that I've seen before include "Irritated, provoked" , "Vexed" , "Cross" , "Made angry" , "Nettled" .)

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