Do the French run slowly? (7)
I believe the answer is:
trickle
'run slowly?' is the definition.
'trickle' can be an answer for 'run' (trickling is a kind of running). I'm not sure about the 'slowly?' bit.
'do the french' is the wordplay.
'do' becomes 'trick' (I am not sure about this - if you are sure you should believe this answer much more).
'the french' becomes 'le' ('the' in French).
'trick'+'le'='TRICKLE'
Can you help me to learn more?
(Other definitions for trickle that I've seen before include "Run in drops" , "Seep out slowly" , "Gentle flow (of liquid?)" , "Flow in thin drops" , "Small flow, dribble" .)