Crossword Genius

Smile radiantly (4)

Ross

I believe the answer is:

beam

'smile radiantly' is the definition.
(synonyms)

This is all the clue.

(Other definitions for beam that I've seen before include "Horizontal structural member" , "Broadcast" , "Smile, transmit (radio signal)" , "Smile; piece of timber" , "Piece of timber - shaft of light" .)

I've seen this clue in The Star Tribune and the Universal.
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