eglantine (n.) Look up eglantine at Dictionary.com
"sweet briar," c. 1400, from French églantine, from Old French aiglent "dog rose," from Vulgar Latin *aquilentus "rich in prickles," from Latin aculeus "spine, prickle," diminutive of acus "a needle," from PIE root *ak- "rise to a point, be sharp" (see acro-).