a cappella singing

NOUN
18 LETTERS · STARTS WITH A

a cappella singing is a valid 18-letter word worth 24 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
A1C3A1P3P3E1L1L1A1S1I1N1G2I1N1G2
1 + 0 + 3 + 1 + 3 + 3 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 2 + 1 + 1 + 2 =24 PTS
DOUBLE WORD → 48TRIPLE WORD → 72
MEANING

What does a cappella singing mean?

NOUN · 1 SENSE
1

Singing without instrumental accompaniment.