Top dog's close to crime racket (5)
I believe the answer is:
block
This clue is a quintuple definition!!
'top' is the first definition.
(thesaurus)
'dog's' is the second definition.
(thesaurus)
'close' is the third definition.
(thesaurus)
'to' acts as a link.
'crime' is the fourth definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe there's a link between them I don't understand?
'racket' is the fifth definition.
(thesaurus)
Can you help me to learn more?
(Other definitions for block that I've seen before include "Cube" , "cake?" , "Obstruct" , "Impede, prevent" , "Mass of wood etc - set of buildings" .)