環衛

public cleanliness / (urban) sanitation / environmental sanitation / abbr. for 環境衛生|环境卫生[huan2 jing4 wei4 sheng1]

to guard / to protect / to defend / abbr. for 衛生|卫生, hygiene / health / abbr. for 衛生間|卫生间, toilet / surname Wei / vassal state during the Zhou Dynasty (1066-221 BC), located in present day Henan and Hebei Provinces

surname Huan

ring / hoop / loop / (chain) link / classifier for scores in archery etc / to surround / to encircle / to hem in

sanitation worker