積水

to collect water / to be covered with water / to pond / accumulated water / ponding

surname Shui

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

to amass / to accumulate / to store / measured quantity (such as area of volume) / product (the result of multiplication) / to integrate (math.) / to solve (or integrate) an ordinary differential equation (math.) / old / long-standing