receiver part

13 LETTERS · STARTS WITH R

receiver part is a valid 13-letter word worth 19 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1E1C3E1I1V4E1R1P3A1R1T1

1 + 1 + 3 + 1 + 1 + 4 + 1 + 1 + 0 + 3 + 1 + 1 + 1 =19 PTS

DOUBLE WORD → 38TRIPLE WORD → 57

MEANING

What does receiver part mean?