eglantine
n.
5Fr =glantine < OFr aiglent < LL *aculentus < L aculeus, a sting, prickle, dim. of acus, a point, sting: see ACUITY6 a European rose (Rosa eglanteria) with hooked spines, sweet-scented leaves, and usually pink flowers; sweetbrier: naturalized in W U.S.

Madame Eglantine - The Prioress in the Canterbury Tales.