pectoral muscle

NOUN
15 LETTERS · 4 SYLLABLES · STARTS WITH P

pectoral muscle is a valid 15-letter word worth 22 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3E1C3T1O1R1A1L1M3U1S1C3L1E1
3 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 3 + 1 + 1 =22 PTS
DOUBLE WORD → 44TRIPLE WORD → 66
MEANING

What does pectoral muscle mean?