(mop) noun
1. A piece of cloth, or the like, attached to a handle: used for washing floors.
2. Any loosely tangled bunch or mass, as of hair.
—v.t. mopped, mop·ping To rub or wipe with or as with a mop.
—to mop up
1. To take up with or as with a mop.
2. Mil. To wipe out remnants of enemy resistance in (captured areas).
—to mop (up) the floor with Slang To defeat easily and decisively. [Origin uncertain. Cf. F. mappe napkin <L mappa.]

(mop) noun
1. A wry mouth; grimace.
2. A pouting or petted young person; a young girl. [<v.]
—v.i. To make a wry face; grimace. [Cf. Du. moppen pout]