Belted constellation (5)
I believe the answer is:
orion
'belted constellation' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for orion that I've seen before include "Constellation that includes Betelgeuse" , "Constellation in the form of a belt" , "Star" , "Constellation on the celestial equator -- giant hunter of Greek mythology" , "Hunter slain by Artemis" .)