Definition of "grok"
verb:
-
To have or to have acquired an intuitive understanding of; to know (something) without having to think (such as knowing the number of objects in a collection without needing to count them: see subitize).
from Wiktionary, Creative Commons Attribution/Share-Alike License -
To fully and completely understand something in all its details and intricacies.
from Wiktionary, Creative Commons Attribution/Share-Alike License
-