(Pyracantha), any of a genus of usually thorny evergreen shrubs, in the rose family (Rosaceae), native to southeastern Europe and Asia. Firethorns ... Found on http://www.britannica.com/eb/a-z/f/28
any of several evergreen, thorny Asian shrubs belonging to the genus Pyracantha, of the rose family, many species of which are cultivated for their foliage and ornamental fruits. Found on https://www.infoplease.com/dictionary/firethorn