Son goes to fix bulbs (5)

I believe the answer is:

segos

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'bulbs' is the definition.
Both the definition and answer are plural nouns.
Maybe there's an association between them I don't understand?

'son goes to fix' is the wordplay.
'son' becomes 's'.
'to fix' indicates an anagram (I've seen 'fixed' mean this).
'goes' anagrammed gives 'egos'.
's'+'egos'='SEGOS'

Can you help me to learn more?

(Another definition for segos that I've seen is " US plants".)

I've seen this clue in The Hindu.

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