Fill-Up is a 7 letter English word. It's valid Scrabble word worth 7 points. It's valid Words with friends word worth 9 points.
You can make 48 anagrams from letters in fill-up (-fillpu).
First recorded in 1850-55; noun use of verb phrase fill up
And this would give the burros a good rest and a fill-up before their climb.
I tell you there was some tall cursing done, and some flying around in the editorial 'fill-up' drawers.