Smile broadly (4)
'smile broadly' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for beam that I've seen before include "Perhaps a summer" , "Radiant smile; timber support" , "Big smile; ray" , "giving a broad smile" , "Wide grin" .)
'smile broadly' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for grin that I've seen before include "Smile wryly" , "Facial expression showing amusement or pleasure" , "Smirk" , "Beam" , "Smile - all that could be seen of the vanishing Cheshire Cat" .)