Bowl over (3)
I believe the answer is:
awe
'bowl over' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for awe that I've seen before include "Respect combined with fear or wonder" , "Wide-eyed wonder" , "Reverential wonder" , "Fear; reverence" , "Feeling of wonder or admiration" .)