what is eglantine
â¢ EGLANTINE (noun). The noun EGLANTINE has 1 sense: 1. Eurasian rose with prickly stems and fragrant leaves and bright pink flowers followed by scarlet hips. Familiarity information: EGLANTINE used as a noun is very rare. EGLANTINE (noun). The noun EGLANTINE has 1 sense: 1. Eurasian rose with prickly stems and fragrant leaves and bright pink flowers followed by scarlet hips. Familiarity information: EGLANTINE used as a noun is very rare.