lapse back

10 LETTERS · STARTS WITH L

lapse back is a valid 10-letter word worth 19 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

L1A1P3S1E1B3A1C3K5

1 + 1 + 3 + 1 + 1 + 0 + 3 + 1 + 3 + 5 =19 PTS

DOUBLE WORD → 38TRIPLE WORD → 57

MEANING

What does lapse back mean?