n.
Pronunciation: ' bär-b ə - ˌ to ̇ l
Function: noun
Etymology: barbit uric + -al (as in Veronal, trademark for barbital)
Date: 1919
: a crystalline barbiturate C 8 H 12 N 2 O 3 used as a sedative and hypnotic often in the form of its soluble sodium salt