'yellow jacket' definitions:
Definition of 'yellow jacket'
(from WordNet)
noun
A barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic [syn: pentobarbital sodium, pentobarbital, Nembutal, yellow jacket]
noun
Small yellow-marked social wasp commonly nesting in the ground [syn: yellow jacket, yellow hornet, Vespula maculifrons]