dead bird—(Austral. sl.) a sure thing; a certainty:
- I used to prowl where jockeys herd, And tipped them for a sure “dead bird.”
dead pigeon—(sl., also: dead duck)
1. a person or thing regarded as useless or a failure:
- The Dominion Stores Ltd. was a dead pigeon and everyone knew it.
2. a dead person:
- Now, having risked everything on my logic, I was a dead pigeon if wrong. There were only minutes left.