O / ob-littĕrātor
noun

ob-littĕrātor

gen. ob-littĕrātōris · gender masculine · decl. 3rd
a blotter out, obliterator
a blotter out, obliterator, sc. from the memory (eccl. Lat.): commemorator, non oblitterator vetustatum, Tert. adv. Marc. 4, 26 fin.; Paul. Nol. Ep. 16, 7.