Denoting a person who bravely intervenes in an attempt to thwart a criminal.
 the have-a-go hero ran across the road and confronted the thief
 Example sentencesExamples
-  Police are trying to trace a have-a-go hero who foiled a machete wielding robber at a petrol station.
 -  A burglar was captured by a have-a-go hero as he tried to rifle a Bradford pub early today.
 -  A have-a-go hero is recovering after being injured while trying to stop thieves escaping from a golf club.
 -  The have-a-go hero ran out through an emergency exit and tried to stop the men getting away.
 -  A judge awarded a have-a-go hero £500 to thank him for rugby tackling a drug-crazed mugger.