Rest the creature (6)
I believe the answer is:
spider
I believe this is a double definition.
'rest' is the first definition.
(I've seen this before)
'creature' is the second definition.
(spider is a kind of creature)
'the' is the link.
(Other definitions for spider that I've seen before include "Prised out the insect" , "Predatory arachnid" , "Webster" , "Insect-eater" , "One has eight legs" .)