<p><strong>Noun:</strong></p><ul><li>A cardinal number, 10 plus 7.</li><li>A symbol for this number, as 17 or XVII.</li><li>A set of this many persons or things.</li></ul><p><strong>Adjective:</strong></p><ul><li>Amounting to 17 in number.</li></ul><p><strong>(Initial capital letter, italics):</strong></p><ul><li>A novel (1916) by Booth Tarkington.</li></ul>