<p><strong>Noun:</strong></p><ul><li>A member of one of the two great religious divisions of Islam, regarding the first four caliphs as legitimate successors of Muhammad and stressing the importance of Sunna as a basis for law.</li><li>The Sunni Muslims.</li></ul><p><strong>Adjective:</strong></p><ul><li>Printing. Superior in quality.</li><li>Obsolete. An address on a letter; superscription.</li></ul>