The Collaborative International Dictionary
Regrating
Regrate \Re*grate"\ (r?*gr?t"), v. t. [imp. & p. p. Regrated; p. pr. & vb. n. Regrating.] [F. regratter, literally, to scrape again. See Re-, and Grate, v. t.]
(Masonry) To remove the outer surface of, as of an old hewn stone, so as to give it a fresh appearance.
To offend; to shock. [Obs.]
--Derham.
Wiktionary
regrating
n. The act of one who regrates. vb. (present participle of regrate English)