fit in

VERB
6 LETTERS · STARTS WITH F

fit in is a valid 6-letter word worth 8 points in Scrabble and 9 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
F4I1T1I1N1
4 + 1 + 1 + 0 + 1 + 1 =8 PTS
DOUBLE WORD → 16TRIPLE WORD → 24
MEANING

What does fit in mean?