The story
Tyburn was formerly a place of execution in England.
Etymology from Wiktionary, CC BY-SA 4.0.
Tyburn ticket
Today it means: A certificate given to a citizen who "apprehends and prosecutes" a felon for certain crimes, exempting them from certain parish and ward duties, such as serving on a jury. Introduced in The Clerks of Assize (Fees) Act 1698, it was repealed in 1818. Full definition →