[mass noun](Medicine)a narcotic and sedative barbiturate drug formerly used to relieve insomnia (医)戊巴比妥
Alternative name: 5-ethyl-5-(1-methylbutyl)-barbituric acid; often used as the sodium salt (sodium pentobarbitone, Nembutal) 又名: 5乙基5(1甲基丁酯)巴比妥酸;通常用作钠盐(戊巴比妥钠,宁比泰)