ONE IN TEN. A parson: an allusion to his tithes.
ONE OF US, or ONE OF MY COUSINS. A woman of the town, a harlot.
ONION. A seal. Onion hunters, a class of young thieves who are on the look out for gentlemen who wear their seals suspended on a ribbon, which they cut, and thus secure the seals or other trinkets suspended to the watch.
OPEN ARSE. A medlar. See MEDLAR.
OPTIME. The senior and junior optimes are the second and last classes of Cambridge honors conferred on taking a degree. That of wranglers is the first. The last junior optime is called the Wooden Spoon.
ORGAN. A pipe. Will you cock your organ? will you smoke your pipe?
ORTHODOXY AND HETERODOXY. Somebody explained these terms by saying, the first was a man who had a doxy of his own, the second a person who made use of the doxy of another man.
OSCHIVES. Bone-handled knives. CANT.
OSTLER. Oatstealer.
OTTOMY. The vulgar word for a skeleton.