Noah Webster's Dictionary (n.) One who, or that which, corrects; as, a corrector of abuses; a corrector of the press; an alkali is a corrector of acids.

Multi-Version Concordance Corrector (1 Occurrence) Romans 2:20 a corrector of the foolish, a teacher of babies, having in the law the form of knowledge and of the truth. (WEB ASV NAS RSV)