Definition of precog:
(n) :
(science fiction) A precognitive person.
(n) :
(science fiction) Clipping of precognition. [(parapsychology) Knowledge of the future; understanding of something in advance, especially as a form of supernatural or extrasensory perception.]
(adj) :
(science fiction) Clipping of precognitive. [Pertaining to the ability to see or predict future events.]