Definition of "thumbprint" [thumbprint]

• A print made by the thumb, especially by the pad of the thumb. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Bank of America said in a statement cited by CNN: "While the thumbprint is a requirement for those who don't have accounts, the bank should have made accommodations.""
• "Bank of America says while the thumbprint is a requirement for those who don't have accounts, the bank should have made accommodations."
• "A spokesman for Bank of America says while the thumbprint is a requirement for those who don't have accounts, the bank should have made accommodations."