blue devil

/blu ˌdɛvəl/

Other forms: blue devils

Definitions of blue devil

1. noun

   a coarse prickly European weed with spikes of blue flowers; naturalized in United States
   synonyms: Echium vulgare, blue thistle, blueweed, viper's bugloss

   type of:

   herb, herbaceous plant

   a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
2. noun

   the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic
   synonyms: Amytal, amobarbital sodium, blue, blue angel

   type of:

   amobarbital

   a barbiturate with sedative and hypnotic effects; used to relieve insomnia and as an anticonvulsant