Train club to spread oil (9)
I believe the answer is:
lubricant
'oil' is the definition.
(I've seen this before)
'train club to spread' is the wordplay.
'to spread' indicates anagramming the letters.
'train'+'club'='trainclub'
'trainclub' with letters rearranged gives 'LUBRICANT'.
(Other definitions for lubricant that I've seen before include "Oil or grease" , "Eg, grease" , "it has a smoothing effect" , "E.g. oil" , "What might have you well oiled" .)