Novel bowler showing what should be straight when bowling (5)

I believe the answer is:

elbow

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'what should be straight when bowling' is the definition.
I can't tell whether this defines the answer.

'novel bowler showing' is the wordplay.
'showing' indicates the answer is hidden within the clue.
'ELBOW' is hidden within 'novel bowler'.

Can you help me to learn more?

(Other definitions for elbow that I've seen before include "Reject" , "Major arm joint" , "push" , "part of the body" , "sack?" .)

I've seen this clue in The Hindu.

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