Smiled, having support (6)
I believe the answer is:
beamed
I believe this clue is a double definition.
'smiled' is the first definition.
(beaming is a kind of smiling)
'having support' is the second definition.
(beam is a type of architectural support)
(Other definitions for beamed that I've seen before include "Smiled widely - having support" , "Shone brightly or smiled widely" , "Smiled broadly like sun's ray" , "Smiled broadly like sun ray" , "Smiled broadly and warmly" .)