noun. 1  The definition of a brain is the mass of nerve tissue located in the head of animals with spinal cords; it is the center of thought and controls movement. An example of brain is what is damaged when someone has Alzheimer's disease. 2  A brain is defined as a smart or intellectual person.
But there is something you can do to pass the retest: Drive your car. In January, Illinois initiated a new emissions test for cars from the 1996 model year and newer. Forget the dynamometer (treadmill) exhaust emissions test. The new test involves checking your gas cap, looking at the check-engine light and plugging a device into your car's diagnostic link.
Filing Deadline / Due Date Description. April 18, 2017. 2016 Illinois State Tax Return. Due date for Illinois State Income Tax Returns - income tax filing deadline. April 18, 2017. 2016 Illinois State Tax Extension. Due date for Illinois automatic extensions (and payment due date if tax is owed) October 16, 2017. 2016 Illinois State Tax Return. Last day to efile a 2016 Illinois State Income Tax Return for tax extension filers and late efilers.