From maraq; properly, rubbed; but used abstractly, a rubbing (with perfumery) -- purification.
see HEBREW maraq
H4795. maruq
[מָרוּק] (Köii. 138) noun [masculine] a scraping, rubbing; — only plural suffix מְרוּקֵיהֶן יְמֵי Esther 2:12 literally the days of their (bodily) rubbings, i.e. the year's preparation of girls for the harem.