thunderbolt

[ thuhn-der-bohlt ]
/ ˈθʌn dərˌboʊlt /

noun

a flash of lightning with the accompanying thunder.
an imaginary bolt or dart conceived as the material destructive agent cast to earth in a flash of lightning: the thunderbolts of Jove.
something very destructive, terrible, severe, sudden, or startling.
a person who acts with fury or with sudden and irresistible force.

Origin of thunderbolt

First recorded in 1400–50, thunderbolt is from the late Middle English word thondre bolte. See thunder, bolt1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for thunderbolt

British Dictionary definitions for thunderbolt

thunderbolt
/ (ˈθʌndəˌbəʊlt) /

noun

a flash of lightning accompanying thunder
the imagined agency of destruction produced by a flash of lightning
(in mythology) the destructive weapon wielded by several gods, esp the Greek god ZeusSee also Thor
something very startling
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