last stage

10 LETTERS · STARTS WITH L

last stage is a valid 10-letter word worth 10 points in Scrabble and 12 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
L1A1S1T1S1T1A1G2E1
1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 2 + 1 =10 PTS
DOUBLE WORD → 20TRIPLE WORD → 30
MEANING

What does last stage mean?

1