variable field

14 LETTERS · STARTS WITH V

variable field is a valid 14-letter word worth 22 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

V4A1R1I1A1B3L1E1F4I1E1L1D2

4 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 4 + 1 + 1 + 1 + 2 =22 PTS

DOUBLE WORD → 44TRIPLE WORD → 66

MEANING

What does variable field mean?