It makes a fine trap (6)
I believe the answer is:
spider
This could be a double definition.
'it' is the first definition.
The definition suggests a singular noun which matches the answer.
'a fine trap' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'makes' acts as a link.
Can you help me to learn more?
(Other definitions for spider that I've seen before include "Spinner" , "Bruce's inspiration?" , "potter's accessory?" , "A crawler" , "Prised out the insect" .)