Crossword Genius

Send a message or aid, possibly (5)

Ross

I believe the answer is:

radio

'send a message' is the definition.
(I've seen this before)

'or aid possibly' is the wordplay.
'possibly' is an anagram indicator.
'or'+'aid'='oraid'
'oraid' anagrammed gives 'RADIO'.

(Other definitions for radio that I've seen before include "Transmit" , "Receiving device" , "Broadcast medium" , "Electronic medium of communication" , "Broadcaster" .)

I've seen this clue in the Evening Standard.
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