oroide
— Noun
– English
～ alloy of copper and tin and zinc; used in imitation gold jewelry
orology
— Noun
– English
～ the science of mountains
orono
— Noun
– English
～ a university town in east central Maine on the Penobscot River to the north of Bangor
Orontium
— Noun
– English
～ one species of aquatic plant: golden club
Orontium aquaticum
— Noun
– English
～ aquatic plant of the southeastern United States having blue-green leaves and a spadix resembling a club covered with tiny yellow flowers
oropharynx
— Noun
– English
～ cavity formed by the pharynx at the back of the mouth
orozco
— Noun
– English
～ Mexican painter noted for his monumental murals (1883-1949)
orphan
— Noun
– English
～ someone or something who lacks support or care or supervision
orphan
— Noun
– English
～ the first line of a paragraph that is set as the last line of a page or column
orphan
— Noun
– English
～ a child who has lost both parents
orphan
— Noun
– English
～ a young animal without a mother
orphanage
— Noun
– English
～ a public institution for the care of orphans
orphanage
— Noun
– English
～ the condition of being a child without living parents; "his early orphanage shaped his character as an adult"
orphanhood
— Noun
– English
～ the condition of being a child without living parents; "his early orphanage shaped his character as an adult"
orphans' asylum
— Noun
– English
～ a public institution for the care of orphans
orphenadrine
— Noun
– English
～ a skeletal muscle relaxant (trade name Norflex) used to treat severe muscle strain and Parkinsonism
orpheus
— Noun
– English
～ (Greek mythology) a great musician; when his wife Eurydice died he went to Hades to get her back but failed
orphrey
— Noun
– English
～ a richly embroidered edging on an ecclesiastical vestment
orpiment
— Noun
– English
～ a yellow mineral occurring in conjunction with realgar; an ore of arsenic
orpin
— Noun
– English
～ perennial northern temperate plant with toothed leaves and heads of small purplish-white flowers