| 1. | any of numerous chiefly tropical plants constituting the genus Croton, of the spurge family, several species of which, as C. tiglium, have important medicinal properties. |
| 2. | (among florists) any plant of the related genus Codiaeum (or Phyllaurea) cultivated for its ornamental foliage. |
n a tick, also the castor-oil plant, which has berries likened to ticks