The Collaborative International Dictionary of English v.0.48:
Zoster \Zos"ter\, n. [L., fr. Gr. ? girdle, zoster. See Zone.] (Med.) Shingles. [1913 Webster]WordNet (r) 3.0 (2006):
zoster n 1: eruptions along a nerve path often accompanied by severe neuralgia [syn: herpes zoster, zoster, shingles]