Crossword Genius

Cancels yearbooks after the fifth fails to show (6)

Ross

I believe the answer is:

annuls

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

'cancels' is the definition.
(annulling is a kind of cancelling)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for annuls that I've seen before include "Renders boid" , "Cancels, makes void" , "Repeals or rescinds" , "Declares invalid" , "Cancels officially" .)

I've seen this clue in The Times and The Sunday Times.
Want a hint initially instead of a full solution? Install my app