bobbin

noun

1. a reel, cylinder, or spool upon which yarn or thread is wound, as used in spinning, machine sewing, lacemaking, etc.
2. Electricity.
   1. a spoollike form around which a coil of insulated wire is wound to provide an inductance.
   2. the coil itself.

noun

1. a spool or reel on which thread or yarn is wound, being unwound as required; spool; reel
2. narrow braid or cord used as binding or for trimming
3. a device consisting of a short bar and a length of string, used to control a wooden door latch
4. 1. a spool on which insulated wire is wound to form the coil of a small electromagnetic device, such as a bell or buzzer
   2. the coil of such a spool
5. (plural) British slang matter that is worthless or of inferior quality; rubbish