drop window

11 LETTERS · STARTS WITH D

drop window is a valid 11-letter word worth 20 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

D2R1O1P3W4I1N1D2O1W4

2 + 1 + 1 + 3 + 0 + 4 + 1 + 1 + 2 + 1 + 4 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does drop window mean?