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Bobbin \Bob"bin\, n. [F. bobine; of uncertain origin; cf. L.
bombus a humming, from the noise it makes, or Ir. & Gael.
baban tassel, or E. bob.]
1. A small pin, or cylinder, formerly of bone, now most
commonly of wood, used in the making of pillow lace. Each
thread is wound on a separate bobbin which hangs down
holding the thread at a slight tension.

2. A spool or reel of various material and construction, with
a head at one or both ends, and sometimes with a hole
bored through its length by which it may be placed on a
spindle or pivot. It is used to hold yarn or thread, as in
spinning or warping machines, looms, sewing machines, etc.

3. The little rounded piece of wood, at the end of a latch
string, which is pulled to raise the latch.

4. (Haberdashery) A fine cord or narrow braid.

5. (Elec.) A cylindrical or spool-shaped coil or insulated
wire, usually containing a core of soft iron which becomes
magnetic when the wire is traversed by an electrical
current.

{Bobbin and fly frame}, a roving machine.

{Bobbin lace}, lace made on a pillow with bobbins; pillow
lace.