spread·er (spr?d??r)n. One that spreads, as:a. A butter knife.b. A farm or garden implement for scattering fertilizer or seed.c. A device, such as a bar, for keeping wires or stays apart.d. Nautical A horizontal support used to spread shrouds on a mast.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.spreader (?spr?d?) n1. (Agriculture) a machine or device used for scattering bulk materials, esp manure or fertilizer, over a relatively wide area2. a device for keeping apart or spacing parallel objects, such as electric wiresCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014spread?er (?spr?d ?r) n. 1. one that spreads. 2. a small knife or spatula for spreading butter or the like. 3. a machine for dispersing bulk material. 4. a device for keeping apart two objects, as electric wires. 5. a strut for spreading shrouds on a mast. [1475?85] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.