a cylinder or cone holding thread, yarn, or wire, used especially in weaving and machine sewing (尤指纺织、机器缝纫中用的)圆柱形(或圆锥形)线筒,线架 ■a spool or reel (电线、胶带、软管等的)卷轴,线圈
a small bar attached to a string used for raising a door latch (系在绳上、用于将门闩抬起使门打开的)门闩抬手
语源
mid 16th cent.: from French bobine, of unknown origin