Top Definition
An analogy for obvious. This was originally coined by a pharmacy professor at the UT Health Science Center at San Antonio. The professor was referring to Phineas Gage, a 19th century railroad worker, who suffered a freak accident when an explosion catapulted a large piece of iron through his skull and into his frontal lobes. An injury that was anything but subtle.
Professor: "what's an antibiotic used for?"

Student Bob: "Uh, there is an inhibitory, Uh, upregulation and, Uh half life ..."

Professor: "An antibiotic kills bacteria. Bob, the answer was like a nail in the head and somehow you completely missed it"
by MeDavebo August 12, 2008
6 Words related to like a nail in the head

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.

×