Star is suing every now and again (3)
I believe the answer is:
sun
'star' is the definition.
(Sun is an example)
'is suing every now and again' is the wordplay.
'every now and again' means one should take alternating letters.
'is'+'suing'='issuing'
The alternating letters of 'issuing' are 'SUN'.
(Other definitions for sun that I've seen before include "Centre of a solar system" , "Louis XIV of France was known as The . . . King" , "Major star" , "Warmer" , "It's sol in Latin" .)