spool
noun [ C ] uk/spuːl/ us/spuːl/
（线、金属丝、胶片等的）卷轴，卷盘
a tube-shaped object with top and bottom edges that stick out and around which a length of thread, wire, film, etc. is wrapped in order to store it
a spool of cotton/film 一轴棉线／一卷胶片
Synonyms: bobbin (FOR THREAD)reel