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.
Origin of firethorn
An Americanism dating back to 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any rosaceous evergreen spiny shrub of the genus Pyracantha, of SE Europe and Asia, having bright red or orange fruits: cultivated for ornament
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012