Top Definition
The original thiobarbiturate, used primarily for intravenous induction of general anesthesia before surgery. Also known as "truth serum".
They gave Bob some Pentothal before his operation and he was out cold in 10 seconds!
by Marty October 22, 2003

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×