dupion; double cocoon
A double cocoon formed jointly by two or more silkworms, producing a coarse, irregular silk. The term is technical and used in sericulture and textiles.
General term for a silkworm cocoon. In everyday contexts, 繭 (まゆ) is more common; 玉繭 is used especially when the spherical shape is emphasized or in technical descriptions.
Thread obtained from dupion cocoons has slubs and a unique texture.
We collect the cocoons made by silkworms and spin thread.
Compound of 玉 (たま, 'ball, sphere') and 繭 (まゆ, 'cocoon'), referring to the round shape of the cocoon. The reading たままゆ is a straightforward combination of the two elements.