Grins at supporters (5)
I believe the answer is:
beams
This clue might be a double definition.
'grins' is the first definition.
(I've seen this in another clue)
'supporters' is the second definition.
Although both the answer and definition are plural nouns, I can't understand how one could define the other.
'at' is the link.
Can you help me to learn more?
(Other definitions for beams that I've seen before include "Rays of light" , "Smiles broadly or sunnily" , "Shines" , "Smiles; joists" .)