Meaning of blue devil in English

1. Pronunciation

   US accent

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   UK accent

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1. Noun

   blue devil

   Definitions

   1. a coarse prickly European weed with spikes of blue flowers

   Examples

   • « naturalized in United States »
2. 2. the sodium salt of amobarbital that is used as a barbiturate

   Examples

   • « used as a sedative and a hypnotic »