排水口

plughole / drainage hole

a row / a line / to set in order / to arrange / to line up / to eliminate / to drain / to push open / platoon / raft / classifier for lines, rows etc

to drain

surname Shui

water / river / liquid / beverage / additional charges or income / (of clothes) classifier for number of washes

mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls