Simple Definition of bobbin
: a round object with flat ends and a tube in its center around which thread or yarn is wound
Full Definition of bobbin
1 a : a cylinder or spindle on which yarn or thread is wound (as in a sewing machine) b : any of various small round devices on which threads are wound for working handmade lace c : a coil of insulated wire; also : the reel it is wound on
2 : a cotton cord formerly used by dressmakers for piping
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