Clairvoyant skill (3)
I believe the answer is:
esp
'clairvoyant skill' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for esp that I've seen before include "Apparent power to perceive things that others can't, in short" , "Initially, clairvoyance or telepathy" , "Apparent power to perceive things that others can't, initially" , "Second sight (abbr)" , "Extrasensory perception (abbrev.)" .)