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.] 1. (Masonry) To remove the outer surface of, as of an old
hewn stone, so as to give it a fresh appearance.