Star turn caught by everyone (5)
I believe the answer is:
algol
'star' is the definition.
(Algol is an example)
'turn caught by everyone' is the wordplay.
'turn' becomes 'go' (a person's move in a board game).
'caught by' is an insertion indicator.
'everyone' becomes 'all' (all people).
'go' placed within 'all' is 'ALGOL'.
(Other definitions for algol that I've seen before include "Star" , "Computer language" , "language (but not used in speech)" .)