1.
water jug; pitcher
A container for pouring water, typically a jug or pitcher used at the dining table.
2.
fresh water container for tea ceremony
A lidded ceramic vessel used in the Japanese tea ceremony to hold fresh water for replenishing the kettle and rinsing the tea bowl.
Compound of 水 (water) and 差し (from 差す, to pour). In everyday use, it refers to a table pitcher. In tea ceremony (茶道) contexts, it is a specific utensil — a lidded ceramic jar holding cold water used during the ceremony.
Common collocations
Cultural note
In 茶道, the 水差し is one of the key utensils. Its shape, material, and decoration are carefully chosen to match the season and the overall aesthetic of the tea gathering. Famous 水差し are highly prized art objects.