fifth part

NOUN
10 LETTERS · STARTS WITH F

fifth part is a valid 10-letter word worth 20 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
F4I1F4T1H4P3A1R1T1
4 + 1 + 4 + 1 + 4 + 0 + 3 + 1 + 1 + 1 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does fifth part mean?

NOUN · 1 SENSE
1

One part in five equal parts.