working order

13 LETTERS · STARTS WITH W

working order is a valid 13-letter word worth 21 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

W4O1R1K5I1N1G2O1R1D2E1R1

4 + 1 + 1 + 5 + 1 + 1 + 2 + 0 + 1 + 1 + 2 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does working order mean?