Crossword Genius

Set aside yearbook, ignoring second article (5)

Ross

I believe the answer is:

annul

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

'set aside' is the definition.
(to annul is to cancel or set aside)

'yearbook ignoring second article' is the wordplay.
I cannot really understand how this works, but
'article' could be 'an' (indefinite article) and 'an' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for annul that I've seen before include "Quash" , "Cancel or render void" , "Cancel, revoke" , "scratch" , "Cancel, abolish" .)

I've seen this clue in The Times.
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