/grok/, var. /grohk/ vt. [from the novel “Stranger in aStrange Land”, by Robert A. Heinlein, where it is a Martian wordmeaning literally `to drink’ and metaphorically `to be one with’]The emphatic form is `grok in fullness’. 1. To understand, usuallyin a global sense. Connotes intimate and exhaustive knowledge.Contrast zen, which is similar supernal understanding experiencedas a single brief flash. See also glark. 2. Used of programs,may connote merely sufficient understanding. “Almost all Ccompilers grok the `void’ type these days.

Ah, now I understand.