Crossword Genius

Gleaming silver base (5)

Ross

I believe the answer is:

aglow

'gleaming' is the definition.
(thesaurus)

'silver base' is the wordplay.
'silver' becomes 'ag' (Ag is the chemical symbol for silver).
'base' becomes 'low' ('low' can be a synonym of 'base').
'ag'+'low'='AGLOW'

(Other definitions for aglow that I've seen before include "Warm - shiny" , "Softly bright or radiant" , "Red-hot" , "Giving out a steady light" , "Incandescent" .)

I've seen this clue in The Telegraph.
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