Buzz call centre medic at home (6)

I believe the answer is:

aldrin

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'buzz' is the definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?

'call centre medic at home' is the wordplay.
'centre' indicates the central letters.
'medic' becomes 'dr' (doctor).
'at home' becomes 'in' (similar in meaning).
The middle of 'call' is 'al'.
'al'+'dr'+'in'='ALDRIN'

Can you help me to learn more?

(Other definitions for aldrin that I've seen before include "Buzz, second man on moon" , "Buzz . . . . . ., moonwalker" , "'Buzz' -, US astronaut" .)

I've seen this clue in the Sydney Morning Herald.

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