Indication of the future (4)
I believe the answer is:
omen
'indication of the future' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for omen that I've seen before include "Sign of something to come" , "premonition" , "Auspice" , "Portent, prophetic sign" , "Event regarded as a prophetic sign of good or evil" .)