missing link

NOUN
12 LETTERS · 2 SYLLABLES · STARTS WITH M

missing link is a valid 12-letter word worth 18 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
M3I1S1S1I1N1G2L1I1N1K5
3 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 1 + 5 =18 PTS
DOUBLE WORD → 36TRIPLE WORD → 54
MEANING

What does missing link mean?

NOUN · 1 SENSE
1

Hypothetical organism formerly thought to be intermediate between apes and human beings.

SYNONYMS