run upon

8 LETTERS · STARTS WITH R

run upon is a valid 8-letter word worth 9 points in Scrabble and 14 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
R1U1N1U1P3O1N1
1 + 1 + 1 + 0 + 1 + 3 + 1 + 1 =9 PTS
DOUBLE WORD → 18TRIPLE WORD → 27
MEANING

What does run upon mean?

1