Glossary · Nouns · R
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TermTypeDefinitionClassificationsUpdated
Rose-RootnounEurasian mountain plant with fleshy pink-tipped leaves and a cluster of yellow flowersverified
Rosebay WillowherbnounMWEtall North American perennial with creeping rootstocks and narrow leaves and spikes of pinkish-purple flowers occurring in great abundance in burned-over areas or recent clearingsverified
Rosebud CherrynounMWEshrub or tree native to Japan cultivated as an ornamental for its rose-pink flowersverified
Rosebud OrchidnounMWEorchid of central and northern South America having 1- to 3-blossomed racemes of large showy rose-colored flowersverified
RosellenounEast Indian sparsely prickly annual herb or perennial subshrub widely cultivated for its fleshy calyxes used in tarts and jelly and for its bast fiberverified
Rosemalingnouna Scandinavian style of carved or painted decoration (as on furniture or walls or dinnerware) consisting of floral motifsverified
Rosemarynounwidely cultivated for its fragrant grey-green leaves used in cooking and in perfumeryverified
Rosettenounan ornament or pattern resembling a rose that is worn as a badge of office or as recognition of having won an honorverified
Rosewoodnounany of those hardwood trees of the genus Dalbergia that yield rosewood--valuable cabinet woods of a dark red or purplish color streaked and variegated with blackverified
Rosewood TreenounMWEany of those hardwood trees of the genus Dalbergia that yield rosewood--valuable cabinet woods of a dark red or purplish color streaked and variegated with blackverified
Rosinweednounany of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinallyverified
Rositanounerect plant with small clusters of pink trumpet-shaped flowers of southwestern United Statesverified
Rostrumnounbeaklike projection of the anterior part of the head of certain insects such as e.g. weevilsverified
Rotary ActuatornounMWE(computer science) the actuator that moves a read/write head to the proper data trackverified
Rotary ConverternounMWEelectrical converter consisting of a synchronous machine that converts alternating to direct current or vice versaverified
Rotary EnginenounMWEan internal-combustion engine having cylinders arranged radially around a central crankcaseverified
Rotary WingnounMWEthe long airfoil that rotates to provide the lift that supports a helicopter in the airverified
Rotationnoun(mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the originverified
Rotational LatencynounMWE(computer science) the time it takes for a specific block of data on a data track to rotate around to the read/write headverified
Rotator CuffnounMWEa supporting structure of the shoulder consisting of the muscles and tendons that attach the arm to the shoulder joint and enable the arm to moveverified
Rotifernounminute aquatic multicellular organisms having a ciliated wheel-like organ for feeding and locomotionverified
Rotisserienounan oven or broiler equipped with a rotating spit on which meat cooks as it turnsverified
Rotogravurenounprinted material (text and pictures) produced by an intaglio printing process in a rotary pressverified
Rotor BladenounMWEthe long airfoil that rotates to provide the lift that supports a helicopter in the airverified
Rouge Et NoirnounMWEa card game in which two rows of cards are dealt and players can bet on the color of the cards or on which row will have a count nearer some numberverified
Rouge PlantnounMWEbushy houseplant having white to pale pink flowers followed by racemes of scarlet berriesverified
Rougeberrynounbushy houseplant having white to pale pink flowers followed by racemes of scarlet berriesverified
Rough BindweednounMWEcreeping or climbing evergreen having spiny zigzag stems with shiny leaves and racemes of pale-green flowersverified
Rough PeanounMWEa weak-stemmed winter annual native to Mediterranean region for long established in southern United Statesverified
Rough-Legged HawknounMWElarge hawk of the northern hemisphere that feeds chiefly on small rodents and is beneficial to farmersverified
Roughlegnounlarge hawk of the northern hemisphere that feeds chiefly on small rodents and is beneficial to farmersverified
Roulettenouna gambling game in which players bet on which compartment of a revolving wheel a small ball will come to rest inverified
Roulette WheelnounMWEgame equipment consisting of a wheel with slots that is used for gamblingverified