cosigner

[n] - a signer in addition to the principal signer (to verify the authenticity of the principal signature or to provide surety) 2. [n] - one of two or more signers of the same document (as a treaty or declaration)
Found on http://www.webdictionary.co.uk/definition.php?query=cosigner

cosigner

cosignatory noun one of two or more signers of the same document (as a treaty or declaration)
Found on https://www.encyclo.co.uk/local/20974

Cosigner

A person who agrees to be liable for another person's debt, or for the performance of another's duty, liability, or obligation.
Found on http://www.lectlaw.com/def/c137.htm

Cosigner

A person who signs his or her name to a loan agreement, lease, or credit application. If the primary debtor does not pay, the cosigner is fully responsible for the loan or debt. Many people use cosigners to qualify for a loan or credit card. Landlords may require a cosigner when renting to a student or someone with a poor credit history.
Found on http://www.nolo.com/dictionary/cosigner-term.html

Cosigner

A term referring to a person, other than the principal borrower, who signs for a loan. The cosigner(s) assumes equal liability for the loan.
Found on http://www.duke.edu/~charvey/Classes/wpg/bfglosc.htm
No exact match found