noun
tea container (for thick tea in tea ceremony)
A small lidded container used in the Japanese tea ceremony to hold powdered matcha, especially thick tea (koicha).
茶入は茶道で濃茶を入れるのに使われる。
The chaire is used to hold thick tea in the tea ceremony.
棗 is a tea caddy for thin tea (usucha), usually lacquered and without a lid knob, while 茶入 is for thick tea and often ceramic with an ivory lid.
Compound of 茶 (cha, 'tea') and 入 (ire, 'container', from 入れる ireru, 'to put in').