n. A list of names and addresses to which advertising, solicitations of money, or other materials material sent in large quantities is mailed; -- it is usually used by comercial or charitable organizations. Mailing lists are often sold by organizations to other organizations, and are frequently used for targeted mailing, i. e., mailing to groups of people who are more likely htan the general population to respond as desired to the message in the mail. [ WordNet 1.5 +PJC ]