Definition: (verb) to understand profoundly and intuitively
Other Forms: grokked; grokking
Synonyms: appreciate, apprehend, discern, perceive, recognize
I came across this word on Chuck Wendig's March 13, 2012 post on his blog, Terrible Minds. (If you're not reading his blog yet, you really should. Believe me, the message gets through despite the foul language.) "Grok" is one of those words that is better read on the page than said in conversation. Expect a funny look if you try the latter. They'll think you've swallowed your tongue.
Mary cast down her eyes and flicked her wrist; her thumb pointing down. The crowd roared, grokking the impact of the simple gesture.
Now that may not have been the best sample use of today's word, but it's your turn now. Show me in the comments how you would use this word in your own writing.