Mop
late 15th century: perhaps ultimately related to Latin mappa ‘napkin’.
wiktionary
From Middle English mappe (also as mappel), perhaps borrowed from Walloon mappe(“napkin”), from Latin mappa(“napkin, cloth”). Believed to be from a Semitic source, variously claimed as Phoenician or Punic (the latter by Quintilian). Compare Modern Hebrew מפה (mapá, “a map; a cloth”) (shortened from מנָפָה (manpah, “fluttering banner, streaming cloth”)). More at map.
etymonline
mop (n.)
late 15c., mappe "bundle of coarse yarn, cloth, etc., fastened to the end of a stick for cleaning or spreading pitch on a ship's decks," perhaps from Walloon (French) mappe "napkin," from Latin mappa "napkin" (see map (n.)). Modern spelling by 1660s. General sense, of such an implement for cleaning floors, windows, etc., is from 1610s. Of smaller utensils of the same sort used for cleaning dishes, etc., by 1869. Of anything having the shape or appearance of a mop (especially hair), by 1847. Grose ["Dictionary of the Vulgar Tongue," 1788] has mopsqueezer "A maid servant, particularly a housemaid."
mop (v.)
"rub or wipe with or as with a mop," 1709 (in mop up), from mop (n.). Related: Mopped; mopping.