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The Free On-line Dictionary of Computing (foldoc)

/grok/, /grohk/ (From the novel "Stranger in a Strange Land",
by Robert A. Heinlein, where it is a Martian word meaning
literally "to drink" and metaphorically "to be one with")

1. To understand, usually in a global sense. Connotes
intimate and exhaustive knowledge.

Contrast {zen}, which is similar supernal understanding
experienced as a single brief flash. See also {glark}.

2. Used of programs, may connote merely sufficient
understanding. "Almost all C compilers grok the "void" type
these days."

[{Jargon File}]

(1995-01-31)