[rohd-ruhn-er] 
| either of two large terrestrial cuckoos of the genus Geococcyx of arid regions of the western U.S., Mexico, and Central America, esp. G. californianus (greater roadrunner). |
| road·run·ner (rōd'rŭn'ər) n. A swift-running, crested bird (Geococcyx californianus) of southwest North America, having streaked brownish plumage and a long tail. Also called chaparral bird, chaparral cock. |
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