yellow jacket

  1. any of several paper wasps of the family Vespidae, having black and bright yellow bands.

  2. Slang. a yellow capsule of phenobarbital.

Origin of yellow jacket

An Americanism dating back to 1790–1800

Words Nearby yellow jacket Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use yellow jacket in a sentence

British Dictionary definitions for yellow jacket

yellow jacket

  1. US and Canadian any of several social wasps of the genus Vespa, having yellow markings on the body

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