墨水

ink / CL:瓶[ping2]

surname Mo / abbr. for 墨西哥[Mo4 xi1 ge1], Mexico

ink stick / China ink / CL:塊|块[kuai4] / corporal punishment consisting of tattooing characters on the victim's forehead

surname Shui

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