Lover wildly catches cold — it’s sticky! (6)
I believe the answer is:
velcro
'it's sticky' is the definition.
I can't judge whether this definition defines the answer.
'lover wildly catches cold' is the wordplay.
'wildly' is an anagram indicator.
'catches' indicates putting letters inside.
'cold' becomes 'c' (eg on taps).
'lover' with letters rearranged gives 'velro'.
'velro' enclosing 'c' is 'VELCRO'.
Can you help me to learn more?
(Other definitions for velcro that I've seen before include "Fastener with tiny hooked threads" , "In clover with cloth fastener" , "Sticky material - clover (anag)" , "Invention for making fast" , "Clothes fastener made with two strips of material" .)