smail /ˈɛs.meɪl/noun 1verb 1forms 3 noun1 •(Internet, old-fashioned) Conventional postal mail; snail mail.To receive this list by smail send self addressed stamped envelope — 1996 verb1 •(Internet, old-fashioned) To send by postal mail.You can retrieve the references and go to lib. to get the articles, order the articles to be smailed to you from NLM, or download them to your fax machine — 1993 formssmailed · smailing · smails