It's also the very first letter of the word shayun, which means "something" just like the the English word "something" -- some undefined, unknown thing.
Kjo eshte gjithashtu shkronja me te cilen fillon fjala shalan, e cila do te thote ''diçka'' pikerisht si fjala Anglisht ''something''-- disa gjera te pa identifikuara, te panjohura.