(government, US) Initialism of Office of Personnel Management. / (Philippines) Initialism of Original Pilipino Music.

An American butterfly, Polygonia interrogationis, whose wings are mottled with various shades of red and brown and have violet tips.

(US, historical, informal) A tourist who came to visit Yellowstone national park independently, bringing their own supplies and arranging their own bedding and transportation.

The quality of being duplicable.