Crossword Genius

Defunct car maker returns, as we hear from the flock (4)

Ross

I believe the answer is:

baas

I'm a little stuck... Click here to teach me more about this clue!

'we hear from the flock' is the definition.
I can't judge whether this definition defines the answer.

'defunct car maker returns as' is the wordplay.
'defunct car maker' becomes 'ab' (I am not sure about this - if you are sure you should believe this answer much more).
'returns' is a reversal indicator.
'ab' in reverse letter order is 'ba'.
'ba'+'as'='BAAS'

Can you help me to learn more?

(Other definitions for baas that I've seen before include "sheepish sounds will result" , "Cape Town master" , "sounds like a mug" , "South African title" .)

I've seen this clue in The Guardian.
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