sunup

NOUN /sən,əp/
5 LETTERS · 2 SYLLABLES · STARTS WITH S

sunup is a valid 5-letter word worth 7 points in Scrabble and 11 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1U1N1U1P3
1 + 1 + 1 + 1 + 3 =7 PTS
DOUBLE WORD → 14TRIPLE WORD → 21
MEANING

What does sunup mean?