E / expĭātrix
noun

expĭātrix

gen. expĭātrīcis · gender feminine · decl. 3rd
an atoning; expiating priestess
an atoning or expiating priestess: piatrix dicebatur sacerdos, quae expiare erat solita, quam quidam ... sagam, alii expiatricem vocant, Fest. s. v. piatrix, p. 213 Müll.