What exactly is QSS? Added new terms

I was reading a response to one of my questions and I came across a term I have no idea what it means. QSS as well as like CS... really I could use someone to tell me what all the terms in league of legends mean. XD Total noob status with not knowing the terms. XD

going to add a few terms to this list.

IAS
Pilling
Sigils
DD
QQ
and last but not least PUG

Solution 1:

• QSS = the item Quick Silver Stash
• CS = your creep score, or minions killed
• IAS = Increased attack speed
• Pilling = Porting back to the base
• Sigil = Various things
• DD = Direct damage ability
• QQ = whine
• PUG = Pick up game

Solution 2:

QSS can be refered to the item Quicksilver Sash.