Noun | 1. | ![]() geranium - any of numerous plants of the family Geraniaceae genus Geranium - genus of mostly North American geraniums: cranesbills Geranium maculatum, spotted cranesbill, wild geranium - common wild geranium of eastern North America with deeply parted leaves and rose-purple flowers Geranium pratense, meadow cranesbill - tall perennial cranesbill with paired violet-blue axillary flowers; native to northern parts of Old World and naturalized in North America Geranium richardsonii, Richardson's geranium - geranium of western North America having branched clusters of white or pale pink flowers Geranium robertianum, herb robert, herb roberts, herbs robert - a sticky low herb with small reddish-purple flowers; widespread in the northern hemisphere Geranium viscosissimum, sticky geranium - geranium of western North America having pinkish-purple flowers in open clusters dove's foot geranium, Geranium molle - western geranium with small pink flowers; a common weed on lawns and in vacant lots |