"Linsey-woolsey (less often, woolsey-linsey or in Scots, wincey) is a coarse twill or plain-woven fabric woven with a linen warp and a woollen weft. Similar fabrics ...
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woven with a cotton warp and woollen weft in Colonial America were also called linsey-woolsey or wincey. The name derives from a combination of lin (an archaic word for flax, whence "linen") and wool. This textile has been known since ancient times; known as Shatnez in Hebrew, the Torah and hence Jewish law explicitly forbid wearing it." - (en.wikipedia.org 20.10.2021)