Definitions

1. noun

a person who delivers the news on a television program, especially the Late Show with David Letterman.

“He became a famous letterman after winning several awards for his comedy.”

2. noun

a person who signs a document as a witness to a signature, especially in a formal or official capacity.

“The notary served as a letterman to the deed, verifying its authenticity.”

3. proper noun

a person who is a member of the Letterman family or has a similar name.

“The Letterman family has a long history in politics, with several notable lettermen serving in government.”