Definition of stinkbugs:
(n) :
Any of several insects, usually shield-shaped, possessing a gland that produces a foul-smelling liquid, usually containing aldehydes, which they use to discourage predators.
(n) :
(entomology) Any of various insects of the order Hemiptera (the "true bugs"), in the suborder Heteroptera, principally in the superfamily Pentatomoidea or Coreoidea.
(n) :
(Southwestern US) A pinacate beetle or stink beetle (genus Eleodes) that releases a pungent odor when threatened.