Definition of "spool" [spool]

• A cylinder of wood, plastic, cardboard, or other material on which wire, thread, or string is wound. (noun)
• The amount of wire, thread, or string wound on such a cylinder. (noun)
• Something similar to such a cylinder in shape or function. (noun)
• A reel for magnetic tape. (noun)
• To wind or be wound on or off a spool. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "If you want to add extra distance make sure the spool is completely full of line."
• "The rotating bail cup a short unskirted spool is in, prevents the line from doing this."
• "The spool is oversized and allows for a lot of line but it feels bulky and over sized."