Sign from afar, i.e. signal (5)
I believe the answer is:
aries
'sign' is the definition.
(star sign)
'from afar i e signal' is the wordplay.
'from' indicates the answer is hidden within the clue.
'ARIES' is hidden in the letters of 'afar i e signal'.
(Other definitions for aries that I've seen before include "House" , "Philip -, English poet" , "star group" , "Zodiac ram" , "First sign of the zodiac" .)