Took a tumble from deadly hill (4)
I believe the answer is:
fell
This clue is a triple definition!
'took a tumble' is the first definition.
(I've seen this in another clue)
'from' acts as a link.
'deadly' is the second definition.
(I've seen this before)
'hill' is the third definition.
(I know that fell is a type of mountain)
(Other definitions for fell that I've seen before include "Came to pass" , "was deflating" , "Stuck-up" , "animal skin" , "Knock down - or was knocked down?" .)