n a winder around which thread or tape or film or other flexible materials can be wound
v transfer data intended for a peripheral device (usually a printer) into temporary storage
v wind onto a spool or a reel
n. （绕线、铁线、照相软片等的）管( spool的名词复数 ); 络纱; 纺纱机; 绕圈轴工人
v. 把…绕到线轴上（或从线轴上绕下来）( spool的第三人称单数 ); 假脱机（输出或输入）