Shine or gleam (7)
I believe the answer is:
radiate
I believe this clue is a double definition.
'shine' is the first definition.
(I know that shine can be written as radiate)
'gleam' is the second definition.
(I know this)
(Other definitions for radiate that I've seen before include "Give out (light, etc)" , "Disseminate" , "Spread outwards" , "broadcast" , "Emit (rays or waves)" .)