also: ときもの
noun
unsewing; clothes to be unsewn
Refers to the act of taking apart sewn garments, or to garments that are intended to be unsewn, often for repurposing fabric. A somewhat specialized term used in sewing, tailoring, or traditional clothing contexts.
祖母は古い着物を解き物にして、座布団を作った。
My grandmother unsewed an old kimono and made cushions from it.
この解き物の生地はまだ使える。
The fabric from these unsewn clothes can still be used.
解く is the general verb for untying, undoing, or unsewing. 解き物 is the noun form referring specifically to the act or the items being unsewn.
Compound of 解き (ほどき, continuative form of 解く 'to unsew, untie') + 物 (もの, 'thing'). The reading ときもの follows the same pattern using the alternate reading とく for 解く.