Famous painting representing e.g. a primarily calamitous ruin (8)
I believe the answer is:
guernica
'famous painting' is the definition.
The definition suggests a singular noun which matches the answer.
'representing e g a primarily calamitous ruin' is the wordplay.
'representing' is an anagram indicator (letters must be re-presented in a new way).
'primarily' suggests taking the first letters.
The first letter of 'calamitous' is 'c'.
'e'+'g'+'a'+'c'+'ruin'='egacruin'
'egacruin' anagrammed gives 'GUERNICA'.
Can you help me to learn more?
(Other definitions for guernica that I've seen before include "massacre" , "great work of art?" , "Picasso painting inspired by a bombed town" , "Bombed Spanish town inspiring Picasso picture" , "piece of art" .)