Operate in succession (3)
I believe the answer is:
run
I believe this is a double definition.
'operate' is the first definition.
(I know that operate can be written as run)
'succession' is the second definition.
(I know that run is a type of succession)
'in' acts as a link.
(Other definitions for run that I've seen before include "Proceed quickly" , "work" , "Race; manage" , "Go swiftly - ladder" , "Ladder - manage - sprint - flow" .)