1 [transitive usually passive]
if you are stumped by a question or problem, you are unable to find an answer to it:
a case that has stumped the police
The doctors were stumped and had to call in a specialist.
to walk with heavy steps [= stomp]
stump up/along/across etc
He stumped down the hall.
to put a batsman out of the game in cricket by touching the stumps with the ball when he is out of the hitting area
4 [intransitive and transitive] American EnglishPP
to travel around an area, meeting people and making speeches in order to gain political support:
Alexander has been stumping in New Hampshire.
stump up (something)phrasal verb
We stumped up eight quid each.