Ordsall Hall

Large former manor house in the historic parish of Ordsall, Lancashire, England, now part of the City of Salford, in Greater Manchester.

Organotherapy

Technique that makes use of extracts derived from animal or human tissues to treat medical conditions.

Orgone

Widely discredited theory of universal life energy developed by the Austrian psychiatrist Wilhelm Reich (1897–1957).

Orgonomy

Redirected to orgone.

Osculum infame

Ritual of a witch paying homage to the Devil by kissing his genitals, anus or feet.

Overtoun Bridge

Bridge over the Overtoun Burn on the western approach road to Overtoun House, near Dumbarton in West Dunbartonshire, Scotland that has attracted international media attention because of the number of dogs that have reportedly leapt from it, often to their deaths after landing on the rocks below.

Oxford Martyrs

Three prominent Protestant clergymen burned alive in 1555-1556 for heresy during the reign of Queen Mary I of England.

Oxgang

Old measurement of land. eight oxgangs equals one carucate or ploughland. One oxgang is the area that could be ploughed by a team of eight oxen in one year.

Padiham witch

Convicted witch who escaped the death penalty because she had caused no harm to anyone.