pyracanth (n.) Look up pyracanth at Dictionary.com
thorny shrub of the apple family, 1660s, from Modern Latin genus name Pyracantha, from Greek pyrakantha (Dioscorides), a plant named but not described, from pyr- "fire" (see fire (n.)) + akantha "thorn, thorny plant," from PIE root *ak- "sharp, pointed" (see acrid).