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Synonyms for Yellow Jacket (same or very similar meaning)

WordNet sense 1 (a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic):
Nembutal, pentobarbital, pentobarbital sodium

WordNet sense 2 (small yellow-marked social wasp commonly nesting in the ground):
Vespula maculifrons, yellow hornet

From the ODE community, based on WordNetadd/edit