Crossword Genius

Knock profits leader wasted (7)

Ross

I believe the answer is:

innings

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'knock' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for innings that I've seen before include "Batsman's spell at wicket" , "period in office" , "Period of batting in cricket" , "A team's turn at batting" , "part of cricket match" .)

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