205 ILCS 605/1
For the purposes of this Act:
"Consumer-deposit account" means a demand or other similar deposit account, such as a checking, negotiable order of withdrawal, money market, savings deposit, share, or member account established and maintained by a natural person with a financial institution and operated primarily for personal, family, or household purposes.
"Financial institution" means any bank subject to the Illinois Banking Act, including a branch of an out-of-state bank as defined in Section 2 of the Illinois Banking Act, any savings bank subject to the Savings Bank Act, any savings and loan association subject to the Illinois Savings and Loan Act of 1985, and any federally chartered commercial bank, savings bank, or savings and loan association organized and operated in this State under the laws of the United States.
"Check" means a writing that complies with the requirements of Section 3-104 of the Uniform Commercial Code.
205 ILCS 605/1