环卫

Traditional form:

環衛

Pinyin (reading):

huánwèi

Definitions:

• public cleanliness
• (urban) sanitation
• environmental sanitation
• abbr. for 環境衛生／环境卫生 (huánjìngwèishēng)

Characters:

• 环 - bracelet, ring; to surround, to loop
• 卫 - to guard, to protect, to defend

Traditional characters:

• 環 - bracelet, ring; to surround, to loop
• 衛 - to guard, to protect, to defend