Small fall? (7)
I believe the answer is:
stumble
'small fall?' is the definition.
'stumble' can be an answer for 'fall?' (thesaurus). I'm not sure about the 'small' bit.
'small fall?' is the wordplay.
I cannot really understand how this works, but
'small' could be 's' (abbreviation - e.g. clothes size) and 's' is found in the answer.
'fall?' could be 'tumble' (tumbling is a kind of falling) and 'tumble' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for stumble that I've seen before include "Fall while walking or running" , "Falter" , "Momentarily trip" , "Slip - fall" , "Stagger" .)