To unwind (something) from or as if from a reel or become unwound.(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.
Use "unreel" in a sentence
"But in the fantasies that unreel in her 16-year-old mind, she gaily walks the red carpet and flirtatiously poses for a music video."
"PETER PRESTA the unreel record 3 EP mint - MXN 3009"
"I actually like to do the same thing as the answers above, but on a nice day when you don't have a lot of time I will just unreel the spool and lay the line out in your yard."