stink bug

noun

any of numerous broad, flat bugs of the family Pentatomidae, that emit a disagreeable odor.
any of various other malodorous bugs.

Origin of stink bug

An Americanism dating back to 1875–80

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for stink bug

Historical Examples of stink bug

It is even less concerned at being caught than is the skunk, or porcupine, or stink-bug.
Under the Maples
John Burroughs