No non-starter in narrow shaft (5)

I believe the answer is:

arrow

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

'no non-starter' is the definition.
I can't judge whether this definition defines the answer.

'in narrow shaft' is the wordplay.
'in' indicates a hidden word.
'ARROW' is hidden within 'narrow shaft'.

Can you help me to learn more?

(Other definitions for arrow that I've seen before include "Early guided missile" , "Quarrel, fired from crossbow" , "William Tell's missile" , "Fletcher's production" , "Move quickly" .)

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

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