Definition of tyburn:
(n) :
(historical) The Tyburn tree, a gallows where public hangings were carried out until 1783.
(n) :
(historical) A former village in Middlesex, England (present-day Greater London), notable for its proximity to the Tyburn tree.
(n) :
A manor, first mentioned in the Domesday Book (1086).
(n) :
(historical) A former stream (or bourn) in Middlesex, tributary to the Thames at four sites (mouths).
(n) :
(historical) A former small stream in Middlesex, tributary to the River Westbourne; frequently confused with the nearby and much longer River Tyburn.