yellow jacket
1. a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic • Syn: pentobarbital sodium, pentobarbital, Nembutal • Usage Domain: trade name (for: Nembutal) • Hypernyms: barbiturate 2. small yellow-marked social wasp commonly nesting in the ground • Syn: yellow hornet, Vespula maculifrons • Hypernyms: hornet • Member Holonyms: Vespula, genus Vespula
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