Block times for visit (4,2)
I believe the answer is:
stop by
'visit' is the definition.
(I've seen this in another clue)
'block times' is the wordplay.
'block' becomes 'stop' (synonyms).
'times' becomes 'by' (both can mean 'multiplied by').
'stop'+'by'='STOP BY'
'for' acts as a link.
(Other definitions for stop by that I've seen before include "Pop in" , "Call as a visitor" , "Drop in" .)