One takes longer running cool wash with extra cold (9)
I believe the answer is:
slowcoach
'one takes longer' is the definition.
I can't tell whether this definition defines the answer.
'running cool wash with extra cold' is the wordplay.
'running' indicates an anagram.
'with extra' means one lot of letters go next to another.
'cold' becomes 'c' (eg on taps).
'cool'+'wash'+'c'='coolwashc'
'coolwashc' is an anagram of 'SLOWCOACH'.
Can you help me to learn more?
(Other definitions for slowcoach that I've seen before include "someone sluggish" , "One who lacks liveliness, like old vehicle" , "Not a fast worker" , "One who's not very fast" , "One who is sluggish in work or actions, due to tardy vehicle?" .)