noun
earthenware teapot
A traditional Japanese teapot made of unglazed earthenware, often used for brewing green tea.
祖母は土瓶でお茶を入れるのが好きだ。
My grandmother likes to brew tea in an earthenware teapot.
急須 is a small teapot with a side handle, typically used for brewing Japanese green tea, while 土瓶 refers specifically to an earthenware teapot, often with a top handle.
Compound of 土 (do, 'earth, clay') and 瓶 (bin, 'bottle, jar, pot'), literally 'earthenware pot'.