touch paper

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noun

paper saturated with potassium nitrate to make it burn slowly, used for igniting explosives and fireworks.

Origin of touch paper

First recorded in 1740–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for touchpaper

British Dictionary definitions for touchpaper

touchpaper

/ (ˈtʌtʃˌpeɪpə) /

noun

paper soaked in saltpetre and used for firing gunpowder
light the touchpaper or light the blue touchpaper to do something that will cause much anger or excitement
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