Quarterly means something that happens four times a year.(adjective)
An example of quarterly is the type of earnings statement that a business reports four times a year; quarterly statement.
The definition of a quarterly is a magazine or other publication that comes out four times a year.(noun)
An example of a quarterly is Quilting Quarterly.
See quarterly in Webster's New World College Dictionary
noun pl. quarterlies
See quarterly in American Heritage Dictionary 4
Learn more about quarterly