bobbin

noun4

1. •
   A spool or cylinder around which wire is coiled.

   • Ignition coils using a bobbin molded from high-performance polyester withstand open-circuit bench tests to 70kV. — 2004
2. •
   In a sewing machine, the small spool that holds the lower thread.

   • Wind the bobbin, place it in the machine, and raise the thread.
3. •
   The little rounded piece of wood at the end of a latch string, which is pulled to raise the latch.

   • She went from the linhay and boldly pulled the bobbin of the fuel-house door. — 1878
4. •
   A fine cord or narrow braid.