Browse the Oxford Advanced Learner's Dictionary
- the Old West
- The Old Woman Who Lived in a Shoe
- the Old World
noun - the Olympic Games
noun - the Open
- the open air
noun - the Open University
- the Orange Prize for Fiction
noun - the Order of Merit
- the Order of the Bath
- the Order of the British Empire
- the Order of the Garter
- the Order of the Thistle
- the ordination of women
noun - the Oregon Trail
- the Organization for Economic Cooperation and Development
- the Organization of American States
- The Origin of Species
- the Orkney Islands
- the Orthodox Church
noun - the Osmonds
- the Outward Bound Trust
noun - the Oval
- the Oval Office
noun - the Overland Trail
- The Owl and the Pussy-Cat
- The Oxford Book of English Verse
- the Oxford English Dictionary
- the Oxford Movement
- the Ozark Mountains
- the Pacific Rim
noun - the Painted Desert
- the Palace of Westminster
- the Palladium
- the Pan Am Building
- the Pan American Games
- the Panama Canal
- the Parachute Regiment
- the Paralympics
noun - the Paras
- the Parliamentary and Health Service Ombudsman
noun - the Parthenon marbles
- the past perfect
noun - the past tense
noun - the Patent and Trademark Office
- the Patient's Charter
- the Paymaster General
- the Peace Corps
noun - the Peak District
- the Pearly Gates
noun