Something that is ill (is + ill ISIL). Also known as Islamic State of Iraq. A generally good-oriented group of muslim fanatics that behead people just for fun. (You're right, it was sarcasm)
1. example: This video isils.
2. example: ISIL has taken hostages 4 tourists, and threatens to kill them unless they are given ransom.
The meaning of the name Işıl is brightness, lightness. She is a beautiful lively energetic girl. You always notice the effect of her name from her extroverted and playful personality.
Once you meet someone called Işıl, don't let her go, because she will be the best friend you will ever have.