thunderboomer
Also found in: Idioms.
thun·der·boom·er
(thŭn′dər-bo͞o′mər)n. Informal
A thunderstorm.
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.