Pictures of a couple surrounded by three kings (7)
I believe the answer is:
artwork
'pictures of' is the definition.
The definition suggests a singular noun which matches the answer.
'a couple surrounded by three kings' is the wordplay.
'three kings' can mean three substitutions for 'king'.
'couple' becomes 'two' (a couple can mean two of something).
'surrounded by' is an insertion indicator.
'king' becomes 'R' (abbreviation of Latin rex).
'king' becomes 'R' (abbreviation of Latin rex).
'king' becomes 'K' (chess abbreviation).
'r'+'r'='rr'
'two' put inside 'rr' is 'rtwor'.
'a'+'rtwor'+'k'='ARTWORK'
Can you help me to learn more?
(Other definitions for artwork that I've seen before include "Graphics" , "Illustrations prepared for a publication" , "Illustrative material in publication" , "Illustrations and designs for printing" , "Illustrations in book" .)