Meaning of MOP in English
1》 an implement consisting of a bundle of thick loose strings or a sponge attached to a handle, used for wiping floors.
↘an act of wiping with a ~.
2》 a thick mass of disordered hair.
■ verb ( ~s , ~ping , ~ped )
1》 wipe or soak up liquid from.
↘wipe (something) away from a surface.
2》 ( ~ something up ) complete or put an end to something by dealing with the remaining parts.
C15: perh. ult. related to L. mappa 'napkin'.
■ noun Brit. historical an autumn fair or gathering at which farmhands and servants were hired.
C17: prob. from the practice at the fair whereby a ~ was carried by a maidservant seeking employment.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004