From shabats; checkered stuff (as reticulated) -- broidered.
see HEBREW shabats
H8665. tashbets
תַּשְׁבֵּץ noun [masculine] chequered (or plaited) work; — ת ׳כְּתֹנֶת Exodus 28:4.
שׁבק (√of following; compare Biblical Aramaic שְׁבַק ᵑ7, let go leave, so ; Arabic outstrip).