留守

to stay behind to take care of things

old variant of 留[liu2]

to leave (a message etc) / to retain / to stay / to remain / to keep / to preserve

old variant of 留[liu2]

to guard / to defend / to keep watch / to abide by the law / to observe (rules or ritual) / nearby / adjoining

detachment left to provide covering fire

"left-behind children", rural children whose parents have to make a living as migrant workers in distant urban areas, but cannot afford to keep the family with them