a bow or arc of prismatic colors like a rainbow, appearing in the spray of cataracts, waterfalls, fountains, etc.
Origin of sunbow
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for sunbow
Historical Examples of sunbow
Scarcely a moment had elapsed, and she had vanished like a sunbow.
The sunbow spans your towers, even while the foe Hurls his fell bolt, and rains his iron blow.War Poetry of the South
a bow of prismatic colours similar to a rainbow, produced when sunlight shines through spray
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
A prismatic arc of colors, similar to a rainbow, resulting from the refraction of sunlight through a mist or spray of water.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.