It's a shortage of:
بلا شيء - Without anything. It can mean:
1. (For) free
2. Nothing
3. Never mind! It's ok.
a common phrase: احسن من بلاش
(it's better than nothing).
١ فبراير ٢٠١٥
2
2
1
بلا شيء:
Without anything
nothing
free
it all depends on how you want to use it in a sentence !