Clip edge of picture so there's nothing but the adult insect shown? (5)
I believe the answer is:
imago
'clip' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for imago that I've seen before include "Beetle, for example" , "being immature?" , "Picture of saint" , "Adult, post-metamorphosis insect" , "A mental picture" .)