P / purgātor
noun

purgātor

gen. purgātōris · gender masculine · decl. 3rd
a cleanser; purger
Lit., a cleanser, purger (post - class.): cloacarum, Firm. Math. 8, 20: ferarum, an exterminator of wild beasts, App. Mag. p. 288, 26.—
figuratively
Trop.: animae, Aug. Civ. Dei, 10, 10.