1
- a cylindrical device on which film, magnetic tape, thread, or other flexible materials can be wound; a reel（胶片、磁带、线等的）卷盘; 卷轴：
spools of electrical cable.
电缆卷盘。
1.1
- a cylindrical device attached to a fishing rod and used for winding and unwinding the line as required（钓竿上的）绕线轮。
1.2
- as modifier denoting furniture of a style popular in England in the 17th century and North America in the 19th century, typically ornamented with a series of small knobs resembling spools（家具）斯布尔式的, 旋木花饰的（17世纪流行于英国, 19世纪流行于北美, 多饰有成串的卷轴状小圆突物）：
a narrow spool bed.
一张狭窄的斯布尔床。
1
- with obj. and adverbial wind (magnetic tape or thread) on to a spool把（磁带, 线）绕在轴上：
he was trying to spool his tapes back into the cassettes with a pencil eraser.
他正在试着用铅笔上的橡皮头把磁带卷回到磁带盒中去。
1.1
- no obj., with adverbial be wound on or off a spool被绕上（卷轴）; 被放出：
the plastic reel allows the line to run free as it spools out.
塑料轴能让线自由放出。
2
- with obj. Computing send (data that is intended for printing or processing on a peripheral device) to an intermediate store【计算机】把（将由外围设备打印、处理的数据）输入中间储存, 使假脱机：
users can set which folder they wish to spool files to.
用户可以设定他们希望将文件假脱机到哪个文件夹。
ORIGIN: acronym from simultaneous peripheral operation online.
3
- no obj.(of an engine) increase its speed of rotation, typically to that required for operation（发动机）发动起来：
a jet engine can take up to six seconds to spool up.
喷气引擎可能要用六秒钟才能发动起来。
词源
Middle English (denoting a cylinder on to which spun thread is wound)： shortening of Old French espole or from Middle Low German spōle, of West Germanic origin; related to Dutch spoel and German Spule. The verb dates from the early 17th cent.