An example of earmark is to turn down a page in a book.
An example of earmark is to state a benefit to a group in a bill that's presented to Congress.
The dark images and story in a noir film are an example of an earmark of that genre of film.
A bill in Congress with a special agreement to give $10,000 to clean energy research is an example of an earmark.
The numbered stamp on a cow in a farm is an example of an earmark.
A novel with all the earmarks of success.