Unmasking coke and speed runners (4)
I believe the answer is:
rugs
'runners' is the definition.
(I've seen this in another clue)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for rugs that I've seen before include "Carpets" , "Floor mats or thick blankets" , "Wigs?" , "Floor covering" .)