Crossword Genius

East European composer cited points to be considered? (9)

Ross

I believe the answer is:

checklist

'east' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

I don't understand how the remainder of the clue works.

(Other definitions for checklist that I've seen before include "Items to be performed" , "sort of schedule" , "Reminder, itemised" , "What's used to verify" .)

I've seen this clue in The Guardian.
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