Dictionary

All Word
orchidaceous plant Noun any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors
old maid flower Noun any of various plants of the genus Zinnia cultivated for their variously and brightly colored flower heads
oxlip Noun Eurasian primrose with yellow flowers clustered in a one-sided umbel
orange-blossom orchid Noun diminutive Australian orchid with loose racemes of fragrant white flowers with purple and orange markings on the lip
odontoglossum Noun any of numerous and diverse orchids of the genus Odontoglossum having racemes of few to many showy usually large flowers in many colors
oncidium Noun any orchid of the genus Oncidium: characterized by slender branching sprays of small yellow and brown flowers
orchard grass Noun widely grown stout Old World hay and pasture grass
old witchgrass Noun North American grass with slender brushy panicles
old witch grass Noun North American grass with slender brushy panicles
okra plant Noun tall coarse annual of Old World tropics widely cultivated in southern United States and West Indies for its long mucilaginous green pods used as basis for soups and stews
obeche Noun large west African tree having large palmately lobed leaves and axillary cymose panicles of small white flowers and one-winged seeds
obeche Noun the wood of an African obeche tree
obechi Noun large west African tree having large palmately lobed leaves and axillary cymose panicles of small white flowers and one-winged seeds
oconee bells Noun plant of southeastern United States having solitary white funnel-shaped flowers flushed with pink and large glossy green leaves that turn bronze-red in fall
oak chestnut Noun a tree of the genus Castanopsis
one-flowered wintergreen Noun delicate evergreen dwarf herb of north temperate regions having a solitary white terminal flower
one-flowered pyrola Noun delicate evergreen dwarf herb of north temperate regions having a solitary white terminal flower
oak Noun a deciduous tree of the genus Quercus
oak Noun the hard durable wood of any oak
oak tree Noun a deciduous tree of the genus Quercus
overcup oak Noun medium-large deciduous timber tree of central and southern United States
olive family Noun trees and shrubs having berries or drupes or capsules as fruits
olive tree Noun a tree of the genus Olea cultivated for its fruit
oleaster family Noun shrubs or small trees often armed
oleaster Noun any of several shrubs of the genus Elaeagnus having silver-white twigs and yellow flowers followed by olivelike fruits
obedience plant Noun white-flowered West Indian plant whose root yields arrowroot starch
orange grass Noun annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers
ocotillo Noun desert shrub of southwestern United States and Mexico having slender naked spiny branches that after the rainy season put forth foliage and clusters of red flowers
ochna family Noun family of tropical evergreen trees and shrubs with thick shining parallel-veined leaves
osage orange Noun small shrubby deciduous yellowwood tree of south central United States having spines, glossy dark green leaves and an inedible fruit that resembles an orange
orrisroot Noun fragrant rootstock of various irises especially Florentine iris
orris Noun fragrant rootstock of various irises especially Florentine iris
orris Noun German iris having large white flowers with lavender-tinged falls and a fragrant rhizome
onion plant Noun bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb
ordeal bean Noun dark brown highly poisonous seed of the calabar-bean vine
orchid tree Noun small East Indian tree having orchid-like flowers and hard dark wood
old-maid's bonnet Noun stout perennial of eastern and central North America having palmate leaves and showy racemose blue flowers
oil palm Noun pinnate-leaved palms of the genus Elaeis having dense clusters of crowded flowers and bright red fruit and yielding high quality palm oils
oriental bush cherry Noun woody oriental plant with smooth unfurrowed red fruit grown especially for its white or pale pink blossoms
oriental cherry Noun ornamental tree with inedible fruits widely cultivated in many varieties for its white blossoms
orchard apple tree Noun native Eurasian tree widely cultivated in many varieties for its firm rounded edible fruits
orange milkwort Noun bog plant of pine barrens of southeastern United States having spikes of irregular yellow-orange flowers
orange balsam Noun North American annual plant with usually yellow or orange flowers
orange tree Noun any citrus tree bearing oranges
orangewood Noun fine-grained wood of an orange tree
oxalis Noun any plant or flower of the genus Oxalis
oca Noun South American wood sorrel cultivated for its edible tubers
oka Noun South American wood sorrel cultivated for its edible tubers
oka Noun a Turkish liquid unit equal to 1.3 pints
oka Noun a Turkish unit of weight equal to about 2.75 pounds