any of several social wasps of the genus Vespa, having yellow markings on the body
WordReference Random House Learner's Dictionary of American English © 2025
WordReference Random House Unabridged Dictionary of American English © 2025
yel′low jack′et,
- Insectsany of several paper wasps of the family Vespidae, having black and bright yellow bands.
- Drugs, Slang Terms[Slang.]a yellow capsule of phenobarbital.
- 1790–1800, American.
Collins Concise English Dictionary © HarperCollins Publishers::
'yellow jacket' also found in these entries (note: many are not synonyms or translations):