the.com/bobbin

means A small spindle or spool that thread, yarn, or wire winds around so it can unwind smoothly during sewing, weaving, or similar work.

from From French bobine, a word whose own roots are murky — possibly linked to bobine's older sense of 'little bump' or to the general bob- family of words for small round dangling things, like 'bob' and 'bobble.' It entered English in the 1500s as a textile term, riding in alongside the machinery of weaving and spinning, and has stayed stitched into that trade's vocabulary ever since.