Pivot and throw a six (4)
I believe the answer is:
axis
'pivot' is the definition.
(I've seen this before)
'throw a six' is the wordplay.
'throw' indicates anagramming the letters.
'a'+'six'='asix'
'asix' anagrammed gives 'AXIS'.
'and' is the link.
(Other definitions for axis that I've seen before include "where wheel turns?" , "Line through the middle" , "Centre around which something rotates" , "Line around which something rotates" , "Bloc" .)