grok

VERB /grɑk/
4 LETTERS · 1 SYLLABLE · STARTS WITH G

grok is a valid 4-letter word worth 9 points in Scrabble and 10 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
G2R1O1K5
2 + 1 + 1 + 5 =9 PTS
DOUBLE WORD → 18TRIPLE WORD → 27
MEANING

What does grok mean?