First sign of spring (5)
I believe the answer is:
aries
'first sign of spring' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aries that I've seen before include "Ram star sign" , "Zodiac ram" , "First sign of the zodiac" , "Zodiacal sign also known as the Ram" , "Philip -, English poet" .)