Crossword Genius

Gives up when a spider's revealed (8)

Ross

I believe the answer is:

despairs

'gives up' is the definition.
(I've seen this in another clue)

'a spider's revealed' is the wordplay.
'revealed' is an anagram indicator.
'a'+'spiders'='aspiders'
'aspiders' is an anagram of 'DESPAIRS'.

'when' is the link.

(Other definitions for despairs that I've seen before include "Abandons hope" , "Loses all hope" .)

I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution? Install my app