1
to untangle;to untwine
2
to get back together (with a former partner)
あの二人はよりを戻したらしい。
It looks like they have made up again.
Other forms
縒りを戻す 【よりをもどす】 (rarely used kanji form) · ヨリを戻す 【よりをもどす】 (search-only kanji form)