Describes objects made from clay or earth, such as pottery, figurines, or simple structures. Often used in compound nouns like 土製人形 (clay doll).
This earthen vessel is from the Jomon period.
The children made clay whistles.
Compound of 土 (do, 'earth, soil') and 製 (sei, 'made of, manufactured'). The reading どせい follows standard on'yomi.