Grok
tr.v. Slang grok·ked, grok·king, groks
To understand profoundly through intuition or empathy.
[Coined by Robert A. Heinlein in his Stranger in a Strange Land.]
In Robert Heinlein's "Stranger In A Strange World" Michael Valentine Smith constantly uses it. It is later defined as the Martian word for "Drink" and means to merge with the object you are trying to grok in order to understand it completely. When it is used in real life, it's just a fancy-sounding synonym for "understand".
