| ricinus | (n) a genus of herb having only one known species: castor-oil plant, Syn. genus Ricinus |
| castor-oil plant | (n) 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; widely naturalized throughout the tropics, Syn. castor bean plant, palma christi, Ricinus communis, palma christ |
| sheep-tick | (n) parasitic on sheep and cattle as well as humans; can transmit looping ill in sheep (acute viral disease of the nervous system); a vector for Lyme disease spirochete, Syn. Ixodes ricinus, sheep tick |
| Ricinus | ‖n. [ L., the castor-oil plant. ] (Bot.) A genus of plants of the Spurge family, containing but one species (Ricinus communis), the castor-oil plant. The fruit is three-celled, and contains three large seeds from which castor oil is expressed. See Palma Christi. [ 1913 Webster ] |
| 唐胡麻 | [とうごま, tougoma] (n) castor oil plant; castor oil bean; Ricinus communis [Add to Longdo] |