yellow jacket

Meanings

1. A predatory wasp with alternating black and yellow stripes around the abdomen, usually of the genera Vespula or Dolichovespula.
2. A capsule of pentobarbital sodium (or sometimes other barbiturates), especially when used as a recreational drug.
3. Synonym of yellow vest (“member of a French protest movement which started in late 2018”).

Etymology

From yellow + jacket. * (pentobarbital sodium): Named after the yellow capsule of the Nembutal brand.