Looks delighted at the strong support (5)

I believe the answer is:

beams

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'looks' is the definition.
(beaming is a kind of looking)

I don't understand the remainder of the clue.

(Other definitions for beams that I've seen before include "Rays of light" , "Shines" , "Smiles; joists" , "Smiles broadly or sunnily" .)

I've seen this clue in the Evening Standard.

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