Crossword Genius

Master tricky current (6)

Ross

I believe the answer is:

stream

'current' is the definition.
('stream' can be a synonym of 'current')

'master tricky' is the wordplay.
'tricky' indicates an anagram.
'master' is an anagram of 'STREAM'.

(Other definitions for stream that I've seen before include "group of schoolchildren" , "Brook or small river" , "Torrent" , "Small watercourse" , "divide pupils into ability groups" .)

I've seen this clue in The Telegraph and The Globe and Mail.
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