Run and fall over (4)
I believe the answer is:
trip
I believe this clue is a double definition.
'run' is the first definition.
(thesaurus)
'fall over' is the second definition.
(I've seen this in another clue)
'and' acts as a link.
(Other definitions for trip that I've seen before include "day out?" , "Short excursion" , "Hallucinatory experience" , "blunder" , "Journey; make a mistake" .)