a: any of a genus (Rosa of the family Rosaceae, the rose family) of usually prickly shrubs with pinnate leaves and showy flowers having five petals in the wild state but being often double or partly double under cultivation
b: the flower of a rose
: something resembling a rose in form: as
a (1):compass card(2): a circular card with radiating lines used in other instruments
Any of about 100 species in the genus Rosa (family Rosaceae) characterized by their beautiful, fragrant flowers. Rosa species are probably the most widely recognized and universally favoured of ornamental flowering plants. Hundreds of varieties are cultivated in all types of settings, and there are many hybrids. Roses are susceptible to numerous diseases, most caused by fungi. The rose family contains about 2,500 species and accounts for 30% of the species in the rose order (Rosales). Other popular garden plants and ornamentals in the rose family include spirea, cinquefoil, hawthorn, mountain ash, and flowering cherry. The family also contains many important fruits, including the apple, peach, strawberry, pear, plum, apricot, almond, quince, blackberry, and raspberry. Plants of some species contain dangerous cyanide compounds. Many members have thorns or prickles.