Ran after (6)
I believe the answer is:
chased
'ran after' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for chased that I've seen before include "Went after with the intent to catch" , "Engraved; rushed" , "Decorated metal with engraved or embossed work" , "Pursued at speed" , "followed" .)