| RI | large shrub of tropical Africa and Asia having large palmate leaves and spiny capsules containing seeds that are the source of castor oil and ricin |
|---|---|
| RI | a stack of hay |
| RI | a painful muscle spasm especially in the neck or back (`rick' and `wrick' are British) |
| RI | twist suddenly so as to sprain |
| RI | pile in ricks, as of hay |
| RI | the most decorated United States combat pilot in World War I (1890-1973) |
| RI | the quality of being unstable and insecure |
| RI | childhood disease caused by deficiency of vitamin D and sunlight associated with impaired metabolism of calcium and phosphorus |
| RI | mild infectious rickettsial disease caused by a bacterium of the genus Rickettsia transmitted to humans by the bite a mite that lives on rodents |
| RI | any of a group of parasitic bacteria that live in arthropods (as ticks and mites) and can cause disease if transmitted to human beings |
| RI | microorganism resembling bacteria inhabiting arthropod tissues but capable of causing disease in vertebrates |
| RI | relating to or caused by rickettsias |