Photograph crack after crack (8)
I believe the answer is:
snapshot
'photograph' is the definition.
(snapshot is a kind of photograph)
'crack after crack' is the wordplay.
'crack' becomes 'snap' (synonyms).
'after crack' becomes 'shot' (synonyms. I am not sure about the 'after' bit.).
'snap'+'shot'='SNAPSHOT'
Can you help me to learn more?
(Other definitions for snapshot that I've seen before include "image" , "Informal photograph" , "still taken quickly" , "Instant record of an event" , "pic" .)