Crossword Genius

Choke - or another carburettor control (8)

Ross

I believe the answer is:

throttle

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This clue might be a double definition.

'choke' is the first definition.
(synonyms)

'another carburettor control' is the second definition.
'throttle' can be an answer for 'control' (throttle is a kind of control). I'm unsure of the 'another carburettor' bit.

'or' acts as a link.

Can you help me to learn more?

(Other definitions for throttle that I've seen before include "Valve to regulate the supply of fuel to the engine" , "Strangle; fuel controller" , "Accelerator - choke" , "Fuel-regulating valve in an engine" , "one of the controls in a car" .)

I've seen this clue in The Globe and Mail.
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